Gestational diabetes is high blood sugar that develops during pregnancy and usually disappears after giving birth. It can occur at any stage of pregnancy but it is more common n the second half. It occurs if a women’s body cannot produce enough insulin to meet the extra need in pregnancy. Any women can develop gestational diabetes during pregnancy but the increased risk if the pregnant women’s bod mass index is above 30, she previously had a baby who weighted above 4.5 kg or more, she had gestational diabetes during previous pregnancy. Some women may develop symptoms if their blood sugar level gets too high, hyper glycaemia such as increased thirst, need to pee more than usual, a dry mouth and tiredness. Gestational diabetes in a long term effect can lead to type 2 diabetes.