Due to the increased blood supply to the skin, mild itching is normal throughout pregnancy. The skin of your abdomen is stretched as your pregnancy advances and your baby grows, and this may cause itching.
Mild itching is normally not a cause for concern, but if it becomes severe, it could be an indication of obstetric cholestasis, a deadly liver disorder. Although this affects less than one in every 100 pregnant women, it necessitates medical treatment.