My married friend was planning a baby. Thus month she had the feeling that she has conceived as there were symptoms including vomiting, spotting etc. She was waiting for her periods to be missed to do home pregnancy test to be sure if it. But yesterday night she fell, had immediate periods with heavy unusual bleeding. Is it a possible miscarriage? Does she need to consult a doctor immediately, I mean if it's miscarriage can it be dangerous for her body if unattended?