I just need to vent

Hi last year around fall I started to hang out with this group of people. I have androphobia so when it came to the guys in this group I would not leave my self alone with them. One day I was hanging out with my friend that didn't really know that group of people but one of the guys from that group was walking with us. When we were walking he grabbed me and my friends boob(s) on a few occasions and we didn't know what to do but when he left we went to my house and I was so confused and upset that I didn't tell my dad I had my boyfriend tell him and my dad didn't care. So I thought it was my fault and recently I've been having day terrors where my body starts to shut down and my brain replays what is similar to what I used to have for dreams (I went through a period of time where I only had nightmares) *men beating me kidnapping me raping me and sometimes killing me* and it gets to the point where I have to call myself terrible things to get them to stop and I don't know what to do.