How Developed Is A Baby At 21 Weeks Pregnant?

How Developed Is A Baby At 21 Weeks PregnantSource:


Being pregnant is one of the most exciting and life-changing experiences that a woman can go through. As you approach the midway point of your pregnancy, it’s natural to wonder how developed your baby is at this stage. In this article, we’ll explore what’s happening with your baby’s development at 21 weeks pregnant.

The Development of Your Baby at 21 Weeks Pregnant:

By 21 weeks pregnant, your baby is approximately the size of a carrot and weighs around 10 ounces. Their body is covered in soft hair called lanugo, which helps to keep them warm. At this stage, your baby is also developing their senses. They can now hear your voice, the sound of your heartbeat, and the noises that are happening outside of your body.Your baby’s lungs are continuing to develop, and they are practicing breathing movements by inhaling and exhaling amniotic fluid. This process is essential for preparing their lungs for life outside of the womb. Your baby’s digestive system is also starting to work, as they produce meconium, which is the first stool that they will pass after birth.At 21 weeks pregnant, your baby’s brain is also rapidly developing. They are forming new neural pathways that will help them to learn and develop once they are born. Your baby’s eyes are also starting to open, and they can now blink.

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Your Baby’s Appearance at 21 Weeks Pregnant:

At 21 weeks pregnant, your baby’s facial features are becoming more defined. They have eyebrows, eyelashes, and even tiny fingernails. Their skin is still translucent and is beginning to develop a layer of fat that will help to regulate their body temperature.If you have an ultrasound at this stage, you may be able to see your baby’s gender. However, this isn’t always possible, as some babies are positioned in a way that makes it difficult to see.

How You Might Be Feeling at 21 Weeks Pregnant:

At 21 weeks pregnant, you’re likely feeling a range of emotions. You may be excited about your baby’s development and looking forward to meeting them. However, you may also be experiencing some discomforts, such as back pain or heartburn.It’s important to take care of yourself at this stage of pregnancy. Make sure you’re eating a healthy diet, getting plenty of rest, and staying active. You can also talk to your healthcare provider about any concerns or questions you have.

Frequently Asked Questions:

1. Is it safe to have sex at 21 weeks pregnant?

Yes, it’s generally safe to have sex during pregnancy unless your healthcare provider advises otherwise. However, you may need to try different positions as your belly grows.

2. Can my baby hear me talking at 21 weeks pregnant?

Yes, your baby can hear your voice at this stage. They may even recognize your voice once they’re born.

3. Can I still exercise at 21 weeks pregnant?

Yes, exercise is generally safe during pregnancy. However, you may need to modify your routine as your pregnancy progresses. Talk to your healthcare provider about what types of exercise are safe for you.

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4. Should I be worried if I haven’t felt my baby move at 21 weeks pregnant?

At 21 weeks pregnant, you may start to feel your baby moving more regularly. However, every pregnancy is different, and some women don’t feel their baby move until later on. If you’re concerned, talk to your healthcare provider.

5. When should I start preparing for my baby’s arrival?

It’s never too early to start preparing for your baby’s arrival. You can start by creating a registry of items you’ll need, setting up a nursery, and researching childbirth classes in your area.


At 21 weeks pregnant, your baby is rapidly developing and getting ready for life outside of the womb. They can hear your voice, their lungs are practicing breathing movements, and their brain is forming new neural pathways. Meanwhile, you may be feeling a range of emotions and experiencing some discomforts. It’s important to take care of yourself and talk to your healthcare provider about any concerns you have.

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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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