Hello,
You seem to be having the symptoms of metrorrhagia(heavy periods).Various factors causing it are endometriosis, ectopic pregnancy, hormone imbalance, endometrial hyperplasia, polyps, sexually transmitted diseases, PCOS and benign and malignant pathologies of the uterus. You’ll need tests like an USG of the uterus and pelvis and possibly an endometrial biopsy along with hormone levels assessment to ascertain the cause of the same. For this please consult a gynecologist.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
See your OB/GYN as soon as possible.