Hello dear I understand your concern Implantation bleeding will occur 10-12 days after the ovulation. It means it will occur around the time of menstruation. Your bleeding could be due to UTI, vaginal infection and rough sex. I would suggest to undergo vaginal examination, urine tests to rule out the above conditions. Doctor will give following advises: Warm water sitz bath with added betadine for the mechanical trauma due to rough sex. Drink plenty of water and juice of cranberry, orange and pine aple. Tablet nitrozolium and pyridium and syrup cital Apply vagisil cream Wear pure cotton loose inner and mainatin proper pelvic hygiene. Hope this may help you Contact HCM for further health query Best regards Dr. Sagar