Things I still can't do. Warning:TMI

So I was 11 when my first encounter with molestation. I was at my dad's for the weekend and my best friend who lived down the street called me crying really late. She was having problems with her father again.  So as a friend I walked over. At the time her older brother was having his 18th birthday party. The moment walking in you could smell the alcohol. When I finally made it to her room she wasn't there so I figured I'd wait. Not too long after that her brother came barging in. He was usually really nice but of course he was drunk. He started pushing me around And trying to rip off my clothes. At that point I was completely scared. He then pulled down his pants and forced me to give him a blowjob. I couldn't stop crying. He was so forceful and angry. My jaw popped and my lips were cracked. After that he passed out on the bed and I left. My parents still to this day don't know. And I still have jaw problems. Which messes things up for my SO now. What can I do to please him since I can't please him in that way? I'm now 22 btw. I just need some help on what I can do.