Hi there!
Menstrogen is a menstruation induction medicine. It is a combination of estrogen and progesterone. It can be used in the form of emergency contraception. It should not be used as regular contraceptive pill and any other form of birth control pill may be used. It can cause menstrual irregularities or heavy bleeding. The commonest cause of bleeding after intercourse is hormonal imbalance. The two hormones regulating a woman’s cycle are estrogen and progesterone. If they get out of balance, one may have spotting. Dysfunctional ovaries as in PCOD, thyroid gland problems, and starting and stopping birth control pills or any other birth control method can all affect your hormone balance. Bleeding after sex can indicate some serious problem. Pelvic inflammatory disease,STIs,atrophic vaginitis, cervical or endometrial polyps, cervical erosions are few common causes of bleeding after sex .In cervical erosion cervical cells become inflamed. Do consult your gynecologist and discuss your concerns. I do hope you find this information useful. Best luck and regards.