Just pregnant how is menstruation to return a responsibility

Generally, pregnant women will not come to menstruation after pregnancy. The first symptom of pregnancy is menstrual stop. If there is vaginal bleeding after pregnancy, it is generally two kinds of situations: threatened abortion and ectopic pregnancy. Threatened abortion and ectopic pregnancy are more likely to show vaginal bleeding after menstrual stop. In addition, there is a situation: double uterus. Some people are double uterus, one side of the uterus pregnant, the other side due to endometrial thickening, will also bleed. Therefore, if pregnant after the performance of menstruation shows vaginal bleeding phenomenon, must go to the hospital to do B ultrasound examination, in addition to check blood HCG and progesterone to rule out ectopic pregnancy, double uterus possibility.