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When you’re 30 weeks pregnant, your baby is somewhere between 15 and 17 inches long and weighs approximately 3 pounds. At this stage, you may notice your skin getting itchy as it stretches over your baby bump, and you may feel a little winded as well. Your baby’s brain continues to develop, red blood cells begin to form in his bone marrow, and his bones also start to harden. He might even sport a full head of hair by now. There’s a lot more going on this week that you might want to find out about, so read on to learn more.  

30 Weeks Pregnant: Your Baby’s Development

This week, your baby may develop in the following ways:

  • Making headway. Your baby’s brain will continue to develop, and around this week, his brain will develop creases and folds. These are known as convolutions, and they allow the brain to hold more brain cells.

  • New blood. Red blood cells start to form in your baby’s bone marrow.

  • Bones hardening. Around this stage of development, your baby's bones begin to harden. However, his skull will remain soft and flexible in preparation for delivery. As the bones in the skull haven't fused together yet, they'll be able to slide over each other and make your baby's head a little smaller as he makes his way through the narrow birth canal, helping him pass through more easily. Due to this process, some babies are born with slightly elongated heads, but their head shape becomes rounded and normal soon after the birth.

  • Full head of hair. This week your baby may have hair on his head. Remember, though, each baby is unique. Some don’t have much or any hair at birth.

pregnancy week 30 fetus

30 Weeks Pregnant: Your Symptoms

The symptoms you may experience around this week of pregnancy include:

  • The seven-month itch. As your skin stretches, you may notice that your belly starts itching, a normal part of pregnancy. Just take care not to scratch the itchy skin, as this will just make it worse. Instead, try massaging your abdomen gently with moisturizing lotion. Read more about itchy skin during pregnancy for additional tips.

  • Huffing and puffing? That's because your uterus is getting bigger and pushing your diaphragm into your lungs, making breathing more difficult. Toward the end of your pregnancy (around 37 or 38 weeks pregnant), you may find breathing a little easier, as your baby drops down into your pelvis, easing up on your diaphragm and lungs. If you have problems breathing when you lie down, try sleeping in a semi-sitting position, using pillows for support.

At 30 weeks pregnant, you’re in your third trimester, and if you’re wondering about how many months pregnant you are, you’re in approximately the sixth month of pregnancy.

If you’re 30 weeks pregnant with twins, then you can read more about your babies’ development in our article on expecting twins.

FAQ at 30 Weeks

What is the risk of my baby being born prematurely

Preterm birth affects approximately 10 percent of pregnancies. Many causes of prematurity are not known, but risk factors include:

  • infections in the mom-to-be, such as urinary tract infections and gum disease

  • carrying twins or multiples

  • a previous preterm delivery

  • fertility problems or miscarriage

  • becoming pregnant six weeks or less after a previous birth

  • being younger than 17 or older than 35

  • smoking.

To find out more about preterm labor and preemies, read our FAQs about premature babies.

Are there any extra nutrients I might need at this stage of my pregnancy?

Yes! Calcium (from milk or other dairy products) will go straight to building your baby’s bones. Iron (from iron-rich foods and from your prenatal vitamins) will boost his iron supply until he’s 6 to 9 months old. At this stage of your pregnancy, protein is also crucial, as it supports healthy cell growth throughout your baby’s body.

30 Weeks Pregnant: Your Checklist

Find a good pediatrician for your baby.

Take a childbirth class, and practice the techniques you learn. If you haven’t already, start preparing your baby’s nursery and gathering the baby gear you’ll need for your baby’s first few months at home.

If you happen to see your healthcare provider this week, ask for her recommendation about having a birth plan, what to include in yours, and what options are available to you.

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30 Weeks Pregnant: Your Checklist

Find a good pediatrician for your baby.

Take a childbirth class, and practice the techniques you learn. If you haven’t already, start preparing your baby’s nursery and gathering the baby gear you’ll need for your baby’s first few months at home.

If you happen to see your healthcare provider this week, ask for her recommendation about having a birth plan, what to include in yours, and what options are available to you.

Sign up to get weekly pregnancy tips