there was no protection used

I'm 15, I was raped by a friend 12 days ago. He drugged me and my other friend and when she passed out. The drugs he had in the alcohol he gave us. I don't know how long he raped me, I remember waking up, (even though I didn't feel asleep I felt paralyzed) to him on me telling me he had came in me, I've been spotting, it stops then discharge goes "overboard " I normally don't eat very much but lately I've been hungry a lot. My breasts hurt, mainly on my nipples whitch are darker then normal. I took an at home pregnancy test before I told my mom, but it was negative and it was taken to early. Someone help me..