16 Weeks Pregnant: Baby is as big as an avocado!

16 Weeks Pregnant: Baby is as big as an avocado!

Week 16 at a glance

Is it just us, or are the weeks flying by at the moment?!

At 16 weeks pregnant, your baby is in a period of rapid growth.

They’ll now be measuring around 12cm (4.7 inches) long from head to bum ‒ about the same as an avocado ‒ and will be weighing in at about 5oz.

Here’s the lowdown on what to expect at 16 weeks pregnant.

In this article: 📝

  • Week 16 at a glance
  • Baby development at 16 weeks
  • Pregnancy symptoms at 16 weeks
  • Pregnancy tips at 16 weeks

Baby development at 16 weeks

Your 16 week fetus is nailing some pretty important skills, like pumping blood through their heart and circulatory system ‒ around 25 quarts (24 liters) a day!

They will also:

  • Have a working liver and pancreas
  • Have functioning taste buds and will be developing preferences for certain flavors through the food you eat
  • Be getting stronger - their backbone and muscles are strong enough to lift their neck and head now
  • Have teeny tiny toenails! OMG!
  • Be able to hear noises from the outside world. Time to start practicing those lullabies!

Pregnancy symptoms at 16 weeks

You’re in the fourth month of pregnancy, with five still to go, and these funny pregnancy symptoms are still changing.

You might even be experiencing some long-awaited positive side-effects of pregnancy, like thicker hair and stronger nails ‒ hooray!

There are a range of common 16 weeks pregnant symptoms, which might look a little bit like this:

Shortness of breath

That flight of stairs really takes it out of you these days, huh?!

Your growing uterus is cramping your lungs and the pregnancy hormone progesterone is tricking you into breathing more often, so it’s common to feel a little out of breath sometimes.

Pregnancy brain

If you’re constantly battling brain fog, you’re not alone!

Pregnancy can seriously affect your cognitive function (you’ve got a lot on your mind, after all) so cut yourself some slack and roll with it.

Bigger boobs

Have you noticed your boobs looking bigger than usual these days?

Your milk ducts are swelling to get ready to feed your baby, so you may need to invest in some comfy new maternity bras.


Elevated progesterone levels and pressure from your uterus can slow the passage of food waste through your bowels, so you can easily get blocked up.

Try to stay hydrated, and eat lots of fibrous foods, to keep things moving as best they can.

Can you feel the baby at 16 weeks pregnant?

Yes! Well, maybe!

It’s common to start feeling your baby move between weeks 16-22.

At this early stage, it might be hard to tell though ‒ especially if this is your first pregnancy and you’re not quite sure what you’re looking out for.

They’re most noticeable if you’re lying down, and may feel like a muscle twitch, or even gas.

If you’re not feeling them yet, don’t worry.

If you have an anterior placenta (a placenta that develops at the front of the uterus) it may make it harder to feel these early movements, but is generally nothing to worry about.

Pregnancy tips at 16 weeks

The top of your uterus is about halfway between your pubic bone and belly button, so your 16-week pregnant bump might be getting a few more second glances from passers-by.

Not only is your baby stacking on the kgs right now, but it’s common for your weight gain to ramp up too.

If you started pregnancy at a healthy weight, expect to gain around 1 pound a week for the next few weeks.

Embrace this ever-changing body of yours, mama.

You are looking great!

Here are some things to add to your 16 weeks pregnant checklist:

  • Start your birth plan: It’s never too early to start thinking about it!
  • Plan a maternity photoshoot: You’re glowing, mama! Why not capture this special time with a maternity photoshoot? Find a photographer you love and get creative with your poses and props.
  • Start brainstorming baby names: Make a list of your favorites. We’ve got loads to choose from if you need some inspo!
  • Invest in some cute maternity clothes: Your body is changing, but that doesn’t mean you can’t still look stylish. Treat yourself to some cute and comfy maternity clothes. Think flowy dresses, stretchy leggings, and oversized sweaters.
  • Schedule a prenatal massage: You deserve some pampering, mama! Schedule a prenatal massage to help relieve any aches and pains. Just make sure to find a licensed therapist who is trained in prenatal massage.
  • Take a childbirth education class: Knowledge is power! Take a childbirth education class to help prepare for labor and delivery. You’ll learn about pain management techniques, breathing exercises, and more.
  • Plan your baby shower: Or get someone else to ‒ only if you want to, though. Don’t feel you have to.

Remember, every pregnancy is unique.

Take time to enjoy this special time and do what feels right for you and your growing baby.

You got this!

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