What Causes Heavy Vaginal Bleeding After Intercourse?

HI YOU DOING I WANT TO KNOW WHATS GOING WITH ME I AM A SEXUAL INTERCOURSE PERSON AND I CAME ON MY PERIOD ON THE SECOUND AND THAT WAS NORMAL AND MY NORMAL DAY TO COME ON AND I CAME BACK ON THE 30 AND IT WAS WORSE THEN A REGULAR PERIOD I HAVE WHAT DOES THAT MEAN