27 Weeks Pregnant
Raise your sparkling water glass and say goodbye to the second trimester! Next week you’ll officially enter your third trimester.
At 27 weeks, baby is breathing (it’s amniotic fluid, not air, but still pretty cool) and even showing brain activity. You’ve got a lot on your brain too, from wondering what the birth is going to be like to trying to find the best pediatrician for baby. As you look ahead to the third trimester, be prepared for some pretty embarrassing stuff (like having to pee all the time—and maybe even when you don’t mean to!). It’s all par for the late-pregnancy course and totally temporary. It’s time to head down the home stretch. Are you ready?
At 27 weeks pregnant, baby is as big as a head of lettuce. The average 27-week fetus measures 14.4 inches and weighs 1.9 pounds. But baby isn’t just getting bigger, they’re also getting smarter.
Find yourself wondering “how long is 27 weeks?” It may feel like the answer is “forever!” but 27 weeks pregnant in months is about six months pregnant.
What trimester is 27 weeks?
At 27 weeks pregnant, you're now in the last week of your second trimester. Congrats, and get ready to enter the home stretch!
3D Views: My Baby, My Body
See their progress for yourself with our 3D interactive tool.
27 Weeks Pregnant Symptoms
The annoying symptoms you’ve been having aren’t likely to go away anytime soon, but at least you’ve probably found some ways to deal with them—and hey, maybe you’re even used to them now. The most common 27 weeks pregnant symptoms are:
- Leg cramps. Keep stretching those legs—flexing your feet can help—and drinking lots of water to prevent these ouchies.
- Backaches. Gentle stretching can help your back pain too. Consider sleeping with one of those huge body pillows, which can ease some of the pressure on your hips and help you get into a comfy position for your back.
- Constipation. If you’re stopped up and you’ve done all the usual prevention—eaten lots of fibrous foods, drunk lots of water and taken plenty of walks—ask your doctor if a fiber supplement or stool softener is safe to take.
- Hemorrhoids. Straining to go to the bathroom and all the pressure baby is putting on your lower half can cause this not-so-pretty 27 weeks pregnancy symptom. Resolving constipation is essential to treating hemorrhoids.
- Skin, hair and nail changes. Notch this one into the unpredictable pregnancy symptom category. Your skin, hair and nails might be thicker or grow faster (yay!) but they might also be more brittle (boo).
- Snissing. This is what we call peeing when you sneeze. Baby is putting a ton of pressure on your bladder and there’s not much you can do about it except take frequent pit stops to empty your bladder, and maybe wear a pantiliner if you’re worried about an unexpected achoo.
Women who are 27 weeks pregnant with twins are vulnerable to preterm labor, so if you notice any pregnancy symptoms that are out of the ordinary—such as bleeding, watery discharge, abdominal pains or consistent, repeated contractions, tell your OB right away. Many twin pregnancies are delivered by 37 weeks, but the longer you can keep those babies in there, the better for their development.
Healthy weight gain at 27 weeks pregnant is around 15 to 30 pounds. If you’ve gained more quickly than recommended—two or more pounds per week—your OB may tell you to slow it down a bit. Sounds rough, but they can give you some tips on keeping the weight gain under control. By sticking to pregnancy weight gain recommendations, you’re reducing your risk of pregnancy complications and preterm labor. You’re also making your third trimester a little easier by not having extra pounds to carry around town with you.
If you’re 27 weeks pregnant with twins, you’ve probably gained more weight—about 29 to 44 pounds. Still, your twins are growing and developing at about the same rate as singleton babies do, though one baby is probably a bit smaller than the other.
You’re probably feeling a ton of kicks inside that 27 weeks pregnant belly—twice as many if you’re 27 weeks pregnant with twins. You may even feel tiny hiccups, which are like patterns of little twitches. For now, sit back and enjoy the kicks and jabs. Next week, you should start counting kicks to make sure baby seems consistently active from day to day.
Inside your 27 weeks belly, baby is practicing inhaling and exhaling with their rapidly developing lungs. And it's official: Baby is showing brain activity! From here on out, baby’s brain will keep getting more complex, turning that 27-week fetus into a real smarty pants.
If your pregnancy has been uncomplicated so far, you probably won’t have a prenatal appointment or a 27 weeks pregnant ultrasound. Starting next week though, you’ll visit the doctor twice a month—or every two weeks. Maybe grab some magazines or download some new apps to make those future waiting room visits more enjoyable.
What does a 27-week fetus look like?
If you could peek at baby at 27 weeks in the womb, you’d see your little 27-week-old fetus has continued to put on some fat and muscle with all that moving and dancing in your 27 weeks pregnant belly. Although baby at 27 weeks is just the size of a head of lettuce, they’re over a foot long now (whoa!) and basically a smaller, skinnier version of the baby you’ll meet when they’re born. Baby is learning to suck now too, so they might be sucking their thumb in utero right now! Awww.
Stay hydrated during the day
Focus on hydration during the day, but slow down as you get closer to bedtime so you’re not getting out of bed every two minutes to pee.
Get all the support you need
You probably need support in all kinds of ways right now, from a great bra to hold up those increasingly heavy boobs, to a good pregnancy pillow to support your belly at night. Don’t forget about the other kinds of support, though. As you get closer to your due date, you might find yourself getting more and more emotional. Make sure you have someone to talk to—whether that’s a partner, a friend or a therapist—so you can process all your feelings and get support when you need it.
It’s time to get in a safety mindset by making sure you’re ready to keep baby safe at all times. Make sure any new baby gear meets current safety requirements, get started on baby proofing, take an infant safety and CPR class and get your vaccines. There’s a lot to think about, but it’s better to think about it now, before baby comes.
Sleep while you can
Your sleep may be interrupted by a wiggly 27-week fetus and trips to the bathroom, but get all the sleep you can while you can. It’ll get harder and harder to get the shut-eye you need as baby grows—and trust us, you want to be as rested as you can before baby arrives.
Reminders for the week:
Medical content was reviewed November 2020 by Patricia Pollio, MD, a New York-based ob-gyn and director of the department of obstetrics & gynecology at Good Samaritan Hospital in Suffern, New York.