Implantation bleeding is just spotting not heavy at all. I would bleed for 3 days, nothing for 3 days, bleed for 4 more and it was due to fibroids. Maybe you should call a gyn just to be sure. good luck ~d
its prob just brake through bleeding them you should be fine, test in a week just to make sure though
have you missed any pills or been any any antibotics?