Third Trimester Checklist: What to Do Before Baby

Third trimester checklist by week

Babies don’t follow calendars, which is both sweet and mildly inconvenient. So the goal here is simple: handle the must-do items early, then leave the nice-to-have tasks for later if your energy runs low.

Weeks 28-32: Start with the paperwork and care details. Confirm your maternity leave dates, benefits, and who needs what from you at work. If that feels like a lot, this Maternity Leave Checklist for Work, Benefits, and Home can help you sort it into smaller pieces. Review your insurance, choose a pediatrician, and start tracking baby movements in the way your provider recommends.

Weeks 33-36: This is a good window for the practical setup. Install the car seat, pack your hospital bag, wash newborn clothes, and set up baby’s safe sleep space. Finish any birth class homework now too, even if that just means watching the last video while eating cereal on the couch. For a bigger prep list, keep the Third Trimester Checklist for Birth and Baby Prep nearby.

Weeks 37-40: Think “ready to leave the house.” Keep your phone charged, fill the gas tank, stock easy food, and review labor signs. Make a simple plan for pets, older kids, or house keys. A sticky note on the fridge with names and phone numbers counts.

If you’re catching up from earlier pregnancy stages, you can skim the First Trimester Checklist for a Calm Start or the Second Trimester Checklist Before Baby Arrives. And if baby-name tabs are still open at midnight, pages like Tanmay Suresh Upadhyay: meaning & origin can be a cozy little break.

Medical and birth planning tasks

This is the part of the third trimester checklist that can feel a little grown-up and paperwork-heavy, but it’s also the part that helps you feel steadier when labor gets closer.

At your next appointment, ask your provider a very direct question: “What symptoms mean I should call right away?” Write the answer in your phone. Make sure you ask about bleeding, severe headache, decreased movement, contractions, leaking fluid, and sudden swelling, so you’re not trying to decide in a panic at 2 a.m.

If your hospital or birth center offers pre-registration, get that done now. Save the labor and delivery phone number in your contacts too. Label it clearly, like “Hospital Labor and Delivery,” because nobody wants to scroll through old emails while timing contractions.

Write a short birth preferences note. One page is plenty.

You can include:

• Pain relief preferences
• Who you want in the room
• Cord blood choices
• Feeding plans
• Newborn procedures you want to ask about

Think of it as a helpful note, not a script. Birth can change quickly, and your care team needs room to respond, but having your wishes written down can still make conversations easier.

This is also a good time to check on any pregnancy-specific items with your provider. Ask about your Group B strep testing timeline, any Rh status questions, and whether extra monitoring is recommended for your pregnancy. If you’re working through leave details at the same time, our Maternity Leave Checklist for Work, Benefits, and Home can help keep those pieces from getting tangled together.

Pick a pediatrician before baby arrives, then call the office and ask how newborn visits are scheduled after discharge. Some offices want you to call from the hospital, while others explain the process ahead of time.

If you’ve been following along since the First Trimester Checklist for a Calm Start or the Second Trimester Checklist Before Baby Arrives, this is the point where the plans start getting real. For the bigger picture, keep the Third Trimester Checklist for Birth and Baby Prep nearby.

Hospital bag essentials for parent, partner, and baby

Your hospital bag does not need to look like you’re moving in for a week. Pack the things that make those first hours easier, then leave the rest of the nursery at home.

For the birthing parent, start with the must-haves: photo ID, insurance card, phone charger with a long cord, comfortable going-home clothes, lip balm, hair ties, glasses if you wear them, basic toiletries, and any daily medications. I’d tuck these into the top of the bag or a clear pouch so you’re not digging around while someone is asking for paperwork.

For your partner or support person, pack snacks, a water bottle, a change of clothes, a charger, and something cozy like a pillow or sweatshirt. Add a written list of people to update after baby arrives. It sounds old-school, but when everyone’s tired and emotional, it’s nice not to rely on memory.

For baby, keep it sweet and simple: one going-home outfit in newborn size and one in 0-3 month size, a hat if the weather calls for it, and a blanket for the ride home. The car seat should already be installed before you leave for the hospital, not waiting in the box by the front door.

One small folder is worth packing too. Use it for hospital papers, birth certificate forms, discharge instructions, and anything you’ll need to look at later when your brain is full.

If you’re still sorting out the bigger picture, this Third Trimester Checklist for Birth and Baby Prep can help you keep the final weeks practical. You may also want to pair it with a Maternity Leave Checklist for Work, Benefits, and Home so the home stuff isn’t sitting in your head while you’re packing tiny socks.

Set up the newborn sleep and diaper stations

Before baby arrives, set up the two places you’ll use most in those blurry first weeks: the sleep space and the diaper changing spot.

For sleep, keep it simple and safe. Use a firm, flat mattress with a fitted sheet, and leave out pillows, loose blankets, bumpers, and stuffed animals. I know the tiny quilts and plush animals are sweet, but they’re better for a shelf or photo moment than the actual crib or bassinet.

Place the bassinet or crib somewhere night wakings feel doable. For many families, that means the parents’ room for the first months, because those feeds, diaper changes, and little check-ins happen often. You don’t need a fancy setup. A bassinet beside your bed, a dim light, and burp cloths within reach can make 2 a.m. feel a little less chaotic.

Then pick one main diaper station where you’ll truly change the baby. Not the picture-perfect one, necessarily. The one you’ll actually use. Stock it with:

• Diapers
• Wipes
• Diaper cream
• Hand sanitizer
• Burp cloths
• A spare outfit

If your home has stairs, add a small caddy on another floor. A few diapers, wipes, cream, and a clean sleeper downstairs can save you from climbing steps with a crying newborn and a fresh spit-up situation.

Wash a few newborn outfits, swaddles, and burp cloths now, but don’t wash everything. Leave tags on extras until you know your baby’s size and what they actually like wearing. Some babies live in zip sleepers. Some outgrow newborn clothes before you’ve finished your first coffee.

If you’re lining this up with work leave and home prep, this pairs nicely with a Maternity Leave Checklist for Work, Benefits, and Home and a broader Third Trimester Checklist for Birth and Baby Prep.

Install the car seat before labor starts

This is one of those third trimester jobs that feels small until you’re suddenly doing it under pressure. Install the infant seat or convertible seat before labor starts, and use both the car seat manual and your vehicle manual while you do it. They really do work as a pair.

Once it’s in, check three things: the recline angle, the tightness at the belt path, and the harness height for a newborn. A good quick test for tightness is to hold the seat right at the belt path and see if it moves more than it should. If you’re unsure, don’t guess. Look for a local car seat inspection station or a certified child passenger safety technician who can walk you through it.

Also, practice the harness now.

Loosen it. Tighten it. Buckle the chest clip. Adjust the straps. Do it a few times with a stuffed animal or tiny outfit so your hands know what to do before you’re standing in the hospital parking lot with a crying newborn and a very tired body.

Skip aftermarket head supports, strap covers, and bulky layers unless your car seat manual specifically allows them. Tiny babies look so delicate, and it’s tempting to add extra padding, but the safest setup is the one your seat was designed and tested to use.

If you’re working through bigger pre-baby logistics too, our Third Trimester Checklist for Birth and Baby Prep pairs well with a Maternity Leave Checklist for Work, Benefits, and Home.

Prep your home for feeding

Feeding a newborn can feel very simple in theory, then suddenly very complicated at 2 a.m. with a crying baby and a missing burp cloth. A little setup now can save you some stress later.

If you plan to breastfeed, make yourself one cozy feeding spot. It doesn’t need to be fancy. A basket beside the couch or bed with a full water bottle, easy snacks, burp cloths, nipple cream, and a phone charger is enough. You’ll be glad it’s there when you finally sit down and realize you’re starving.

If you have a pump, wash the parts before baby arrives and spend a few minutes learning the settings. Check whether you need replacement flanges, milk storage bags, or extra bottles. Future you does not want to be reading pump instructions while half-asleep.

Planning to formula feed, or just want formula as a backup? Buy a small amount of newborn-friendly formula, a few bottles, and a bottle brush. You don’t have to stock a whole pantry yet. Babies can have preferences, and so can parents once real life begins.

Before baby comes, learn the basics of safe formula preparation and breast milk storage. Keep the instructions somewhere easy to find, like inside a kitchen cabinet or saved in your phone. Add your lactation consultant number, pediatrician number, and after-hours line to that same spot.

This is a great task to add alongside your Third Trimester Checklist for Birth and Baby Prep. If you’re still organizing the bigger picture, your Maternity Leave Checklist for Work, Benefits, and Home can help you keep the home pieces from getting scattered.

Handle paperwork, money, and leave details

This is the kind of third trimester task that feels boring now and deeply helpful later. Future you, holding a sleepy newborn at 2 a.m., will be grateful you didn’t leave every form and phone call for postpartum brain.

• Confirm your leave dates with your employer. Ask what they need from you before birth and what they’ll need after baby arrives. If you haven’t already made a plan, our Maternity Leave Checklist for Work, Benefits, and Home can help you think through the work, benefits, and home pieces in one place.

• Ask HR how to add the baby to your health insurance. Write down the deadline, the exact forms needed, and where to send them. Don’t trust yourself to remember it later. Put it in your phone, your planner, or a sticky note on the fridge.

• Review any benefits that may apply to you, like short-term disability, FMLA, paid family leave, or state benefits. The goal isn’t to become an expert. It’s to know what you may qualify for, who to contact, and what paperwork has to happen.

• Choose the “life admin” person for the first few weeks. This could be you, your partner, or a trusted family member. Someone needs to handle bills, insurance calls, pediatrician scheduling, and random forms that show up when everyone is tired.

• Set up autopay for key bills if that lowers your stress. Rent or mortgage, utilities, phone, internet, and car payments are good places to start. The original third trimester prep advice is simple here: one less thing to worry about is a gift.

• Gather documents in one folder. Add Social Security forms if you’ve been given them, birth certificate instructions, pediatrician information, insurance details, and your leave paperwork.

If you like checking things off by stage, you can pair this with our Third Trimester Checklist for Birth and Baby Prep. And if you’re looking back and thinking, “Wait, should I have done some of this sooner?” don’t worry. The First Trimester Checklist for a Calm Start and Second Trimester Checklist Before Baby Arrives are there if you want a quick reset.

Stock the house with simple postpartum supplies

A little stocking up now can save you from that very specific newborn-stage errand: standing in a store aisle, sore and exhausted, trying to remember which trash bags you buy.

Keep it practical. You don’t need a basement full of supplies. You just need enough to get through the first stretch at home.

For postpartum recovery, set up a small bathroom basket with:

• Heavy pads
• A peri bottle, if your hospital doesn’t provide one
• Comfortable underwear
• Stool softener, if your provider approves it
• Pain relief your doctor says is safe

Put it where you’ll actually reach it. If your main bathroom is downstairs but you’ll be resting upstairs, make a second mini setup. Future you will be grateful.

For meals, think easy and filling. Freezer breakfasts are gold here, like breakfast burritos or baked oatmeal cut into squares. Add soups, pasta sauce, rice bowls, and snacks you can eat with one hand. Granola bars, muffins, cheese sticks, and trail mix all count. This is the same kind of home prep we like to think through early, even back in a Second Trimester Checklist Before Baby Arrives, but it becomes very real now.

For the bathroom and laundry, stock toilet paper, hand soap, laundry detergent, and trash bags. Nobody wants a Target run two days after coming home with a newborn.

For baby, keep it simple:

• Diapers in two sizes
• Wipes
• Diaper cream
• Burp cloths
• A thermometer

Skip the huge stockpiles for now. Some diaper brands fit better than others, and some babies’ skin tolerates one wipe or cream better than another.

If you’re also tying up work and home details, our Maternity Leave Checklist for Work, Benefits, and Home pairs well with this stage, along with the full Third Trimester Checklist for Birth and Baby Prep.

Plan support for the first two weeks

The first two weeks can feel very full, so it helps to decide now who can step in for the small, practical things. Make a short list in your phone with names beside specific jobs: who can bring dinner, walk the dog, hold the baby while you shower, or drive you to an appointment.

Be specific. “Can you drop off soup on Tuesday?” is easier for people to answer than “Can you help sometime?”

Set visitor expectations before birth, while you still have the energy to say things clearly. You might decide visitors can come after a certain day, only for short visits, and only if they’re feeling well. You can also let people know your handwashing rule and whether kissing the baby is okay. A simple text works: “We’re keeping visits short at first, asking everyone to wash hands, and no baby kisses for now.”

If you have older kids, plan their care during labor and add a backup person in case things start at night. Pack a small bag with pajamas, clothes, snacks, a comfort item, and any instructions grandparents or friends might need. Do the same for pets: food amounts, walk times, vet info, and where the leash or litter supplies are kept.

Pick one person to send hospital updates, too. You don’t need to answer every “Any baby yet?” text from the bed.

If you’re still organizing the bigger picture, our Third Trimester Checklist for Birth and Baby Prep pairs well with a Maternity Leave Checklist for Work, Benefits, and Home. And if you’re catching up from earlier pregnancy tasks, the First Trimester Checklist for a Calm Start and Second Trimester Checklist Before Baby Arrives can help you spot anything you missed, including sweet naming notes like Tanmay Suresh Upadhyay: meaning & origin.

What can wait until after baby arrives

Some things on a third trimester list feel urgent because they’re cute, visible, or all over your feed. But they can wait.

Nursery decorating, baby books, elaborate closet systems, and extra toy storage do not need to be finished before birth. If the shelves aren’t styled and the tiny socks are living in a basket for a while, you’re still ready enough. Baby won’t care.

You also don’t need every gadget before labor starts. The real basics are much simpler: a safe sleep space, diapers, feeding supplies, a few clothes, and a properly installed car seat. If your energy is running low, choose three must-finish tasks: car seat, hospital bag, and safe sleep setup. That’s a very solid plan.

Professional newborn photos, birth announcements, and keepsake projects can be scheduled later if they still feel important once baby is here. Some families love doing them right away. Others decide a phone photo on the couch, with everyone in pajamas, says it best.

A pregnancy checklist third trimester should lower pressure, not become a second full-time job. If you want a more pared-back plan, use this Third Trimester Checklist for Birth and Baby Prep, then pair it with practical home planning from the Maternity Leave Checklist for Work, Benefits, and Home.

And if you’re reading ahead or catching up, the First Trimester Checklist for a Calm Start and Second Trimester Checklist Before Baby Arrives can help you see what’s already done. Name research, like Tanmay Suresh Upadhyay: meaning & origin, can wait too.

Frequently Asked Questions

What should I do first in the third trimester?

Start with the tasks that affect safety and care: choose a pediatrician, learn when to call your provider, install the car seat, and set up a safe sleep space.

When should my hospital bag be packed?

Aim to pack your hospital bag by 36 weeks. If you have a higher-risk pregnancy or a history of early labor, pack it earlier.

What are the most important things to do before baby arrives?

The biggest things to do before baby arrives are setting up safe sleep, installing the car seat, preparing feeding supplies, packing your hospital bag, and arranging help for the first week.

How many newborn diapers should I buy before birth?

Buy one small pack of newborn diapers and one pack of size 1 diapers. Some babies outgrow newborn size quickly, so avoid a large stockpile at first.

When should I pick a pediatrician?

Try to choose a pediatrician by 32-36 weeks. Ask how soon they see newborns after hospital discharge and how after-hours questions are handled.

Do I need to wash all baby clothes before birth?

No. Wash a small set of newborn and 0-3 month clothes, swaddles, and burp cloths. Leave tags on extras until you know what fits.

What should I prepare for newborn feeding?

Have burp cloths, a comfortable feeding spot, bottles if needed, and either pumping supplies or a small amount of formula. Learn basic milk storage or formula prep ahead of time.

What can I skip on a third trimester checklist?

You can skip nursery decor, fancy gear, large diaper stockpiles, and complicated organization projects. Focus on safety, feeding, recovery, and support.