16 Weeks Pregnancy Baby Development: What You Need to Know

At 16 weeks pregnant, you’re officially four months along and your baby is about the size of an avocado! This is an exciting time as you continue to feel your baby grow and develop inside you. To help you understand your baby’s development at this stage, here’s a breakdown of what to expect:

What’s Happening with Your Baby?

Your baby is now around 4.5 inches long and weighs about 3.5 ounces. At this stage, your baby’s bones are hardening and becoming stronger, and their ears are moving into their final position on the sides of their head. Your baby’s nervous system is also developing, allowing them to move their arms and legs more freely.

Your baby’s digestive system is also starting to work, as they swallow amniotic fluid and pass it through their intestines. This helps them practice swallowing and digesting food, which will be important skills for them to have after birth.

One exciting development at this stage is that your baby’s taste buds are starting to form, which means they can taste what you eat through the amniotic fluid. So if you’re enjoying a variety of healthy foods, your baby is getting a taste of them too!

What’s Happening with Your Body?

You’re likely starting to show more now, as your uterus continues to expand to accommodate your growing baby. You may also notice that your skin is changing, with some women experiencing a pregnancy “glow” while others may experience acne or other skin issues.

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You may also be experiencing some pregnancy symptoms such as fatigue, back pain, or headaches. If you’re feeling especially tired, try to rest when you can and make sure you’re getting enough iron in your diet to help combat anemia.

It’s important to continue to eat a healthy, balanced diet and to stay active throughout your pregnancy. Gentle exercise such as walking or prenatal yoga can help keep you feeling strong and healthy.


Q: Can I still dye my hair?

A: While there’s no definitive answer on whether or not it’s safe to dye your hair during pregnancy, many experts recommend waiting until after the first trimester to be on the safe side.

Q: Can I continue to have sex during pregnancy?

A: In most cases, yes! As long as your pregnancy is progressing normally and your healthcare provider hasn’t advised against it, sex is generally considered safe during pregnancy. However, it’s always a good idea to talk to your doctor if you have any concerns.

Q: Is it normal to experience constipation during pregnancy?

A: Yes, constipation is a common complaint during pregnancy. To help alleviate it, make sure you’re drinking plenty of water, eating plenty of fiber-rich foods, and staying active.

Q: How can I deal with pregnancy cravings?

A: It’s normal to experience cravings during pregnancy! While it’s okay to indulge in moderation, try to make healthy choices whenever possible. For example, if you’re craving something sweet, try a piece of fruit or some yogurt instead of reaching for candy.

Q: Is it normal to feel anxious during pregnancy?

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A: Yes, many women experience anxiety during pregnancy. If you’re feeling overwhelmed, be sure to talk to your healthcare provider for support and resources.


At 16 weeks pregnant, your baby is continuing to grow and develop every day. By taking care of yourself with a healthy diet, regular exercise, and plenty of rest, you’re helping to give your baby the best start possible. If you have any concerns or questions, don’t hesitate to reach out to your healthcare provider for guidance and support.

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