Your 9 months Pregnancy You're 30 weeks pregnant You are now in your 30th week of pregnancy! Your baby is getting big… 1 of Ad break How big is your baby?Your baby is now around 27cm from crown to rump (about the length of a piece of spaghetti) and weighs approximately 1.36kgs.Now find out how your baby is growing… How is your baby growing?The thin layer of hair named the lanugo that once covered his body is now fast disappearing and he is starting to get plumper. Your baby is looking more like a newborn with toenails and fingernails continuing to grow and skin becoming smoother. He will become more active in the womb as he starts to stretch out and you may be able to make out little hands and feet through your bump as he pushes against you. His lungs are still not fully formed and his immune system is continuing to develop but if he was to be born at this stage he would still have an excellent chance of survival. Now find out what is happening to your body… What is happening to your body?Some mums-to-be can become worried about going into a premature labour at this stage, particularly if they have strong Braxton Hicks contractions - tightening in the muscles of the uterus. These should not cause any pain although they can feel uncomfortable.Swollen ankles and feet are also common at this stage. Your body may start producing colostrum, which is a sweet, watery fluid that you produce from your breasts before your milk comes. It is less rich than breast milk and easier to digest. Your lower back pain is caused by an alteration of your centre of gravity, plus the slight loosening of the pelvic joints. Make sure you wear low heeled shoes and sit up straight. Learn more about what symptoms to expect this week and check out our week by week pregnancy guide...Find out how your baby developed in week 29 of your pregnancy, and how he will grow through your 31st week. By Sara Mackenzie Comments Latest on MadeForMums A Firry Tale: The alternative Christmas 'ad' you really need to see Pregnant celebrities 2017 - who's expecting? Dad's desperate quest to find rare Postman Pat VHS for his son with autism Did the John Lewis Christmas ad copy this '80s children's book?