At least half of all pregnant women seem to have problems with constipation. One reason for this may be changes in hormones that slow the movement of food through the digestive tract. Sometimes iron supplements may also cause constipation. During the last part of pregnancy, pressure on your rectum from your uterus may add to the problem.
Drink plenty of liquids – at least 6-8 glasses of water each day, including 1-2 glasses of fruit juice such as prune juice. Other liquids (such as coffee, tea and colas) should not be drunk. They will tend to create a dehydrating effect on your body.
Eat food high in fibre, such as raw fruits and vegetables and bran cereals.
Exercise daily - walking is a good form of exercise.