Is it normal to delay menstruation for 20 days?

Menstruation delay 20 days, if the woman is in reproductive period, sexual life is normal, to determine whether pregnant, can be judged through blood HCG test and ultrasound examination whether pregnant, after ultrasound examination to determine whether intrauterine pregnancy or ectopic pregnancy. If normal intrauterine pregnancy, clinical diagnosis according to whether there is a need to decide. If ectopic pregnancy, should be actively treated. Menstruation delay 20 days may also be caused by ovarian dysfunction, depending on the delay time. If 20 days after normal menstruation, can be clinically observed. Menopause women ovarian function decline may cause menstrual delay 20 days, clinically if there is no serious bleeding or obvious endometrial lesions, you need curettage, if necessary, special treatment can be given.