Pregnancy week 16
This week your baby is about the size of avocado — around 11.6 cm and 100 g.
Your baby this week
Your baby is now about the size of an avocado, with the head held more upright and steady on the neck. The facial muscles are starting to work, so your baby can make small expressions like grimacing, though they're still involuntary. The heart is now pumping a large amount of blood each day, and the eyelashes and eyebrows are beginning to appear. The eyes are also starting to move slowly behind the closed lids.
Your body this week
This week you may feel more vibrant as your belly shows more clearly. It's common to notice your skin improving, though some changes like increased pigmentation or slight fluid retention may appear too. If you've been pregnant before, you might feel your baby's first gentle movements around this time.
Tips for this week
Try including foods rich in omega-3 and iron to support your baby's brain development and your energy levels. Protect your skin from the sun and use a gentle moisturizer to care for natural pigmentation. This can also be a lovely time to plan for your next ultrasound, which may reveal even more about your baby.
Frequently asked questions
How big is the baby at week 16?+
At week 16, your baby is about the size of avocado — roughly 11.6 cm and 100 g, though every baby grows at its own pace.
Which trimester is week 16?+
Week 16 falls in the Second trimester.
How many weeks are left at week 16?+
At week 16, you have about 24 weeks to go until the typical 40-week due date.
Is week 16 normal?+
Every pregnancy is different. If you feel well and your check-ups are on track, week 16 is usually a normal part of the journey — but always reach out to your doctor or midwife with any concern.
This guide is for general information and reassurance — it isn't medical advice. Always follow your doctor or midwife for your own pregnancy.