What Causes Abdominal Pain,vomiting And Tender Breasts After Having Intercourse?

about 2 half weeks ago I had unprotected sex I had a little bleed a few hours later, now I have very tender breast pains in my stomac and lower back, at times my right hand side of stomac feels like its being pulled from the inside I have woken up and have threw out the pasted 2 days a strange taste in the mouth I am not due on a period for ten days yet what could be going on with me??