Hello. I am a 20 year old male and I hooked up with another 20 year old male while traveling. He told me he is negative and was tested last month and hasn't been with anyone else since ... but I don't know him so I don't know how well I can trust him.
We made out a bit, we exchanged oral sex, and also rimmed each other and we rubbed our penises together and on each other's anuses but there was no penetration. In the end, we ejaculated separately and so I had no contact with his semen and he had no contact with mine.
What would be the risk of HIV transmission? I'm extremely paranoid when it comes to this kind of stuff so I've found myself constantly worrying about it for the past few days so any words to ease my paranoia would be great. Am I freaking out unnecessarily? Are there any ways to calm this anxiety a bit? Thanks for your help.