Sexual abuse or overreacting?

I got drunk at my male best friends house a the other night and stayed over, and I woke up in the middle of the night with him pulling my hips back onto his even though I went to bed alone, and I was really drunk and confused so I just rolled over and he left me alone and I went back to sleep, but then I woke up again with his hand down my pants rubbing my vagina and feeling me and I didn't know what to do bc he's supposed to be my best friend and I was so drunk and confused so I got up and went to sleep on the couch, and then he left so I got back in bed and woke up again with him sucking and kissing my neck and I rolled over again and he left and I just fucking cried bc I was so uncomfortable and upset and I was too drunk to know what to do, if it was anyone else I would of hit them and made a scene but this was my best friend and we were in his house and if I said anything what If they don't believe me, and I had to get up the next morning and pretend everything was fine but I felt so sick and his dad was supposed to drive me home so it's not like I could sit there and be like hey your son touched me while I slept and it's been killing me inside since but I don't know if I'm overreacting, im scared to tell any of the adults I know because they love him as well and I'm scared they won't think it's a big deal or won't believe me, or think I wanted him to do it bc I didn't fight him when I'm usually quick to hit anyone who wrongs me, but I was so confused and uncomfortable I just didn't know what to do, and when I opened my snapchat the next day he had taken selfies with me while I slept saying I was so cute and he wished I would wake up so we could 'have some fun'

Please let me know if I'm overreacting, I need to know because this is making me feel so disgusted and upset, I haven't been able to sleep or eat properly and the idea of seeing or speaking to my 'best friend' makes me feel ill.