The absence of menstruation for several months may be caused by pregnancy, menopause or hormonal disorders in the body. 1. Pregnancy: If a woman of childbearing age has had sexual intercourse without using contraception, then if she does not have her period for several months, the first thing to consider is whether it is caused by pregnancy. 2. Menopause: Menopause is a natural phenomenon, generally between the ages of 45 and 55, due to the decline in estrogen levels, menstrual disorders gradually occur until no menstruation. 3. Hormone level disorders: If the hormone level in the body has changed, it will also lead to lack of menstruation, and the common diseases are polycystic ovary syndrome, ovarian insufficiency, premature ovarian failure and so on. If you don’t have your period for several months, it is recommended that you consult a doctor to find out the specific cause and treat the symptoms.