Being taken advantage of when drunk

I had a Halloween party last night and me and my best friend drank quite a bit. I blacked out and I remember bits and pieces but I remember having sex with someone and I kept saying "ouch! stop it!" I felt like I had no control over my body. There was a break in my memory then I was crying to my roommate saying the guy had raped me. My friend told me I was just being dramatic. I have a fiancé who lives in another state and I called him saying the same thing. I don't know what I'm suppose to feel about what happened. I've had many partners and having sex with someone random when I'm drunk is not out of sorts. I feel like my friend was just thinking I was being dramatic about it and I don't know whether to think I was actually raped or was just being dramatic.