Your pregnancy: weeks 13 to 16

Your baby

Your baby has more muscle tissue and harder, more developed bones. Skin is beginning to form, but it's almost transparent at this point. Your little one is starting to roll, kick, and move around a lot — flexing tiny arms and legs, too.

What’s happening this week?

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Week 13 A plum
handful of plums

13 weeks pregnant

Hello, second trimester! Goodbye, morning sickness. (I hope!)

  • Your baby is almost the size of a plum.
  • Long, thin arms are growing.
  • Your little one’s tiny hands can make a fist.
  • Eyelids are formed and closed, to protect developing eyes.
Week 14 A lemon
hands holding two lemons

14 weeks pregnant

By now my baby can suck their thumb. Hope it doesn’t become a habit!

  • Your baby is the size of a lemon now.
  • Your little one is very active — moving all the time.
  • Your baby is busy smiling, frowning, and making other facial expressions.
  • Hair is growing on your baby’s head and eyebrows.
Week 15 An avocado
hand holding an avocado

15 weeks pregnant

Hard to believe I can love something this tiny so much!

  • Your baby is the size of an avocado.
  • They've has grown a whole inch since last week!
  • Now your baby can swallow, suck, and breathe in amniotic fluid.
  • Your little one can curl their tiny fingers and toes.
Week 16 An apple
hand holding an apple

16 weeks pregnant

The apple of my eye!

  • Your baby is the size of an apple and continues to grow quickly.
  • Your little one is moving around inside the amniotic sac.
  • Your baby is strong enough to hold up their little head.

Your body

Your baby bump might be starting to show, and your clothes may be getting a little snug. Hopefully, you’re feeling good and have more energy and less morning sickness than you did in your first trimester. For some, it takes a bit longer to feel better.

Your to-do list

  • If you work, start thinking about when you plan to go on maternity leave. Talk to your employer about your company’s maternity policy and other benefits.
  • Keep wearing your seat belt, even as your belly expands. Stay comfy and keep baby safe by placing the lap band below your baby bump.
  • Try to find 10 minutes to relax every single day. Growing a baby is hard work!

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Northern California members:
Visit Your Pregnancy to sign up for prenatal classes, get weekly emails, view and prepare for appointments, and more.

Learn about CenteringPregnancy®, a unique prenatal care program that includes group support with other new moms.