I Was Raped 4 Days Ago. After It Happened I

I was raped 4 days ago. After it happened I had some cramping. No bleeding. Then yesterday I had some old blood spotting and the cramps were more intense. Today I've had more fresh blood with little clots and it seems more like a period. I am regular and had my period 2 weeks ago. The cramps are just as bad as they were after the incident. I was also a virgin. What could be going on?