13 Weeks Pregnant - Symptoms, Baby Development, Tips - Babylist

13 Weeks Pregnant

May 16, 2019

13 Weeks Pregnant

13 Weeks Pregnant
13 Weeks Pregnant

Here’s what to know when you’re 13 weeks pregnant:

Your Baby

It’s the last week of the first trimester! Can you believe it? That’s right, when you’re 13 weeks pregnant, you can kiss that first trimester good-bye. Hopefully, if you’ve been suffering from early pregnancy symptoms like morning sickness and crazy mood swings, you’ll start to feel better very soon. Here’s what’s going on with your 13-week fetus.

How Big is Baby at 13 Weeks?

Your baby is 2.9 inches and weighs 0.81 ounce this week. In cuter terms, that’s the size of a Tamagotchi virtual pet. Interested in the fruit or vegetable scale? The size of baby at 13 weeks is about a lemon or a peapod.

Baby’s Development

  • Vocal cords: Your baby at 13 weeks is developing vocal cords, readying for those first adorable wails.

  • Fingerprints form: Baby’s already showing their individuality. Their tiny little fingers are getting their unique fingerprints.

  • Working kidneys: With their kidneys developed, they’re starting to pee into the amniotic fluid. For the rest of your pregnancy, baby will actually swallow their amniotic fluid and urine too. (Gross but fascinating.)

13 Weeks Pregnant With Twins

If you’re 13 weeks pregnant with twins, those prenatal vitamins are even more important. Both babies need plenty of folic acid throughout pregnancy for optimal development. So don’t stop taking them just because the first trimester is almost over!

💛 Congratulations 💛

13 weeks pregnant is how many months again? You’re in month 3 of pregnancy, and you’re almost through the first trimester. This is officially the last week!

Unless your genetic screening is this week, you probably won’t have a 13 week ultrasound. But if you do, here’s an idea of what baby might look like:

Pregnancy Week 13 Ultrasound

Photo by Tommy’s

13 Weeks Pregnant Symptoms

As those less-than-fun first trimester pregnancy symptoms begin to abate, here’s what you can expect to feel this week and in the weeks to come.

  • Increased sex drive: Feeling amorous? A boosted sex drive during pregnancy is completely normal, and to be expected in the second trimester. Sex during pregnancy is completely safe too (as long as you don’t have a condition that’s caused your doctor to advise against sex). Your babe is cocooned with amniotic fluid, and there’s a mucus plug to keep everything out. So have some fun if you feel like it!

  • Nausea: Morning sickness is known as one of the early pregnancy symptom, but it can stick around in the second trimester. If you’re still feeling ill, you’re likely heading down the home stretch by 13 weeks pregnant. If you don’t get noticeably better in the next few weeks, tell your doctor.

  • Heartburn: Have you traded nausea and fatigue for heartburn? More than half of pregnant women develop heartburn, especially in the second trimester. If you’re suffering, try eating six small meals rather than three big ones. Also, eat more slowly (yep that’s a real tip), and avoid rich or spicy foods if they aggravate you.

  • Stretch marks: One of the most annoying 13 weeks pregnant symptoms is stretch marks. These reddish streaks may start sprouting up on your hips and breasts. Basically, your skin is stretching like crazy, creating tiny tears. Lotions with vitamin E and alpha hydroxy acids may help prevent stretch marks, so feel free to try those, and stay hydrated too. Still, you might just be prone to them because of genetics. The good news is, often times, stretch marks fade a bit after you give birth.

Top Tip for 13 Weeks Pregnant

You need an extra 340 calories a day during the second trimester, which is basically a second breakfast.

Your 13 Weeks Pregnant Belly

Recommended weight gain for the first trimester is a total of about 1.1 to 4.4 pounds. If you haven’t gained much (or even lost) weight because of morning sickness or lack of appetite, it shouldn’t make much of a difference, but you should try to gain about a pound per week from here on out. (The recommendation could be slightly more or less, depending on your BMI, so get a personalized rec from your doc.)

You’ll start to feel your baby move around soon! Those first flutters appear at different times for different moms-to-be, but some say as early as 13 weeks to 16 weeks pregnant. Others may not be able to tell the difference between gas and baby kicks until about 17 weeks to 22 weeks pregnant.

Partner Tip

This sounds so obvious, but do what she asks you to do. Most pregnant women are asking because they really want and need help. Being pregnant can be overwhelming at times!

13 Weeks Baby Bumps from Real Moms








@mrs mckennaelston


How to Eat When You’re Pregnant

Pregnancy What to Eat Photo

Growing a baby takes calories. Please don’t count them. Just feel empowered to eat them. In general, pregnant women should eat somewhere between 2,200 and 2,900 calories a day, depending on your height and weight, and those calories should be of high-quality nutrition.

See our top tips for a healthy, balanced pregnancy diet eating tips.

Fun Fact

More boys are born than girls. No one knows why.

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Week 13 Pregnancy Checklist

  • Decide how and when you’ll share your good news with your boss, coworkers and any friends or family who don’t know yet.
  • Thinking about a babymoon? Talk locations and start booking travel with your partner in crime.
  • Start a pregnancy journal to record this unique time in your life. Dedicate a blank journal to it, or if you want some structure, check out The Belly Book or Expecting You.
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