I got raped 2 days ago.

So I have a friend let’s call her Gabby. Sometimes we get high together, and we usually get our stuff from her boyfriend, who is a dealer. We hung out with him and his friend once before. That first night, his friend tried to touch me, but I kept saying no. Nothing ended up happening. About a week later, Gabby invited me to hang out again. We were all high. At some point, Gabby and her boyfriend started getting intimate, and his friend and I went into the bathroom to smoke. That’s when everything changed. I should have just left, but I didn’t. He started touching me again. I kept saying no, but I felt like there was nothing I could do. (I’m severely underweight and 5’1), and I think he took advantage of that. I threw up three times during it. Now I have bruises on my chest, knees, hips, and arms. I haven’t told anyone about this. Part of me thinks it was my fault because I knew something like this could happen. I keep telling myself I should have just stayed home. I don’t know how to react or don’t know what to do because I don’t think it was that bad. I just felt like getting it out of my chest.