I have been sexually assaulted multiple times in my life

The first time was at a sleepover. I went to my friends house. It was a bunch of us who went. I remember having fun. But then something happ. I woke up in a diff room. I wasn't wearing my pajama pants anymore just my pj shorts that I had underneath. My underwear was a bit stretched out and my bra was loose. I never told anyone but I think I was assaulted because my mouth and privates felt sore. I was told that I got up in the middle of the night and didn't feel well so I slept in a diff room. I was 13 so I was scared to get in trouble