Respected doctors. I know that implantation bleed can co-incide with the expected period date and therefore can be mistaken as a period. But implantation bleeding happens only ONCE, right? But what if a women has bleeding not once, not twice but THRICE ? Every month for the next 3 months, at an interval of 27-29 days just like periods? And bleeding occurs on the scheduled period date, just like a period. The bleeding looks like periods and lasts for same duration as a period. Can this regular bleeding can happen in first trimester of pregnancy for three times? Or Was this bleeding actually her period and she wasn't pregnant?