Your baby is now around 30 centimetres long and weighs in at nearly 600 grammes, 1.3lbs. This is the week when her nostrils will begin to open and the blood vessels in the lung develop, preparing your baby for the time when she will need to breathe

Your baby now spans between 5 and 7 centimetres and weighs around 14 grammes, or half an ounce. He has formed all his essential parts and for the next six months will devote most of his energy to growing and developing ready for life outside your

on in. His skin is very thin and almost transparent, the blood vessels can be seen beneath it. He is developing soft, fine hair, called lanugo, all over his body to protect his very thin skin from the amniotic fluid. This hair will usually fall out

Your baby now weighs nearly 2kg, over 4lbs. The rapid brain development is continuing, and his head is growing to accommodate the developing organ. The bones of the skull aren’t hardening in the same way as most of the other bones in the body

have some real hair - some babies are born with a head full of hair and others with none.When awake, she will often have her eyes open and be looking around the womb, taking in her surroundings. Her toenails are now nearly fully developed

cell production by the matrix will continue until around week 34, and although it will have disappeared by birth this doesn't mean that the brain stops developing - your baby’s brain development will continue until he’s about five years old.The eyelids

have begun to develop air sacs and now produce surfactant, a fatty-protein substance that prevents lung tissue from sticking together and so will help the air sacs to inflate.But the big news this week are the eyes. Your baby’s retinas are now

longer and her chin has now lifted up from the chest rather than resting on it.Your baby’s mouth is now well developed and she is practising the sucking and swallowing reflexes. Your baby has also developed everything she needs for speech in later life

These days most women are aware of the key elements that will help or harm a baby's fetal development, from what they eat to their working conditions, to toxins like cigarettes and alcohol. However, a new study has also sent a timely reminder

but will begin to smooth out over time as he develops more muscles and puts on fat. Permanent teeth buds are now appearing in your baby's gums.Your baby’s chances of survival if born prematurely have increased by 3-4% every day over the last week, and 24 weeks