How Developed Is Your Baby At 20 Weeks

Congratulations! You’re officially halfway through your pregnancy. At the 20-week mark, your baby is about the size of a banana, measuring approximately 10 inches long and weighing around 10 ounces. Your little one is still developing at a rapid pace, with many exciting changes taking place.

How Developed Is Your Baby At 20 WeeksSource:

What’s Happening to Your Baby at 20 Weeks?

Your baby is now fully formed and looks like a miniature human. Their facial features, including eyebrows and eyelashes, are also developing. Your little one is also growing hair, with their scalp now producing around 100 hairs per day. Your baby’s digestive system is starting to function, and they are producing meconium, which will eventually become their first bowel movement.

Your baby’s hearing is also developing, with their ears now functioning well enough to hear your voice and other external noises. They can even detect the sound of your heartbeat and the rumbling of your stomach!

At this stage, your baby is also beginning to move around more, with their kicks and punches becoming stronger. You may even be able to feel them moving around inside you. However, if this is your first pregnancy, you may not feel your baby’s movements until a few weeks later.

What’s Happening to You at 20 Weeks?

At 20 weeks, your uterus is now about the size of a cantaloupe, and you may begin to experience some discomfort as it continues to grow. You may also start to experience some back pain, as your body adjusts to the additional weight of your growing baby.

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You may also begin to experience some Braxton Hicks contractions, which are often described as practice contractions. These are normal and are your body’s way of preparing for labor.

As your baby continues to grow, you may also experience some swelling in your feet and ankles. This is a common side effect of pregnancy, but if it becomes severe, you should contact your doctor.

What Can You Expect at Your 20-Week Ultrasound?

At your 20-week ultrasound, you can expect to see a detailed image of your baby. Your doctor will be able to check that your baby is growing at a healthy rate, and will also check their organs and limbs to ensure that everything is developing correctly.

This ultrasound is also a great opportunity to find out the sex of your baby, if you haven’t already. However, it’s important to remember that not all babies cooperate during ultrasounds, so you may not be able to find out.


At 20 weeks, your baby is rapidly developing, and you’re halfway through your pregnancy. It’s an exciting time, and there’s so much to look forward to in the coming months.

Remember to take care of yourself during this time, eat a healthy diet, and stay active. And don’t forget to enjoy this special time with your growing baby.

If you have any concerns or questions about your pregnancy, be sure to speak to your doctor or midwife.

Frequently Asked Questions:

  • What Is Meconium?
  • When Will I Start to Feel My Baby Moving?
  • What Are Braxton Hicks Contractions?
  • What Should I Do if I Experience Swelling in My Feet and Ankles?
  • Is It Safe to Have an Ultrasound During Pregnancy?
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Meconium is your baby’s first bowel movement, which is made up of amniotic fluid, mucus, and other substances your baby has ingested while in the womb. You may not feel your baby’s movements until around 22 to 24 weeks, especially if this is your first pregnancy. Braxton Hicks contractions are mild contractions that are usually painless and irregular. If you experience severe swelling in your feet and ankles, it’s important to contact your doctor, as this could be a sign of a more serious condition. It’s generally safe to have an ultrasound during pregnancy, but if you have any concerns, speak to your doctor or midwife.

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I am a child development specialist with a strong passion for helping parents navigate the exciting and sometimes challenging journey of raising a child. Through my website, I aim to provide parents with practical advice and reliable information on topics such as infant sleep, feeding, cognitive and physical development, and much more. As a mother of two young children myself, I understand the joys and struggles of parenting and am committed to supporting other parents on their journey.

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