this can be because of patchy endometrium. get a ultrasound done. had u ever taken any hormonal tab ever before. a 3 month course of oral contraceptives will help u

Hey.it's difficult to differentiate between intermenstrual bleeding and Menstrual bleeding ,I think is Menstrual bleeding with clots Passing blood clots during menstruation can be normal. The amount, length and frequency of menstrual bleeding vary from woman to woman. However, passing large blood clots may be a sign that something's not right.