I recently had unprotected oral sex. A guy was giving me and another guy a blowjob switching from one penis to another. The guy that was receiving oral sex came first into a performing guy's mouth. He spitted it and then continued giving me a blowjob, I came into his mouth as well.
I know there is a risk of STIs, but could you please tell me which STIs are more likely to be transmitted in this scenario?
Also, is there a risk of HIV?