Early Signs of Twins Pregnancy: First Two Weeks The first two weeks of pregnancy are unusual because technically during week one, you are not yet pregnant. Doctors count when you become pregnant on the first day of your previous menstrual cycle. This is because a woman starts ovulating about week two or three after the last menstrual cycle. This is when a woman’s body … [Read more...] about What Are the Early Signs of Twins Pregnancy in the First Two Weeks?