However sometimes normal periods can be
irregular. The causes of menorrhagia could be due to
bleeding disorders, vitamin K deficiency, excess usage of aspirin, hormonal imbalance, stress, fibroids, recent intra uterine devices (like copper-T)etc. So I will like to advise for internal examination with gynecologist and take opinion.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided.