Pregnancy within 12 weeks called early pregnancy, also known as early pregnancy, regular menstruation, diagnosis of early intrauterine pregnancy, more than a week or so uterine enlargement is not obvious, only feel the uterus soft; more than two weeks can touch the uterus about the size of a small egg, softer; more than four weeks uterus enlarged as a small fist. After eight weeks, the uterus is enlarged obviously, and you can touch the enlarged uterus similar to the size of a small ball of skin, and the ultrasound can see the shaped fetus, heartbeat, limbs, and head of the fetus. In the case of ectopic pregnancy, the uterus does not enlarge regardless of the weeks of pregnancy.