What are the chances I got HIV from this?

About a year ago, I figured I didn't have anything more to lose, and I decided to whore myself out for a place to stay the night.I was 15 (said I was 20), and the guy didn't question me.He was a Mexican dude in his late thirties/early forties living in a trailor park.And he raped me.He didn't go anywhere near my anus, but he forced his cock in my mouth, and he forced my flaccid unprotected cock into his own anus. He was pinching and squeezing my penis, and he managed to only get the head in while I kept trying to pull away from it.It was sore afterward, and I couldn't get hard again for a couple days. I checked it though and didn't see any cuts or scrapes.The guy didn't come on me. He came into a Kleenex, and then I slept next to him with underwear on.I was watching my genitals for STD signs and never saw any. But I've heard that HIV has no symptoms and takes a long time to be detectable. I've been paranoid about having it ever since that happened. That guy's probably never used a condom in his life.The only other guy I've ever had anal sex withWhat are the chances I have HIV now?