Rape, healing, and God?

I have been raped near a thousand times by two men (both now ex-boyfriends) and I am just falling apart. Throughout the whole thing I have held faith in God but after the last time (4 weeks ago) I just can't seem to keep the faith. What do I do? How do I know God is really there and why would this happen so many times in that past 2 1/2 years? I'm only 17.