Babies grow from a fertilised egg in the first weeks, to a fully developed baby in the last few months. Every woman and every pregnancy is different, so try not to worry if things happen for you a little earlier or a little later than for other mums to be.
When babies are smaller and lighter than they should be for that stage of pregnancy
What your baby's movements feel like and what to do if they start to move less
How to look after your health and the health of your growing baby
How and when to tell your friends, family, employer and work colleagues you're pregnant