Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. According to your question, the possibilities are: Polymenorrhagia, that is frequent menstrual cycles with heavy blood flow, which can be seen in conditions like hormonal imbalance, local causes like fibroids, Adenomyosis etc. Recurrent miscarriages can also be present like this sometimes. In case of miscarriage she should have history of unprotected intercourse around the time of ovulation. Conformation can be given by testing for pregnancy only. If bleeding is recent, she can go for urine pregnancy test once. If already around one week over, better to go for blood test for pregnancy as it can give positive result upto around two weeks of miscarriage. Hope I have answered your query. Let me know if I can assist you further.