What is a miscarriage?

Dr Lesley Regan

The most common cause of bleeding after the time of the missed period is miscarriage. Miscarriage is the loss of a pregnancy at any time up to the 24th week. A loss after this time is called a stillbirth. At least 8 miscarriages out of 10 actually occur before 13 weeks of pregnancy. These are called early miscarriages. A late miscarriage is one that happens from 13 weeks to 24 weeks of pregnancy.