On March 31st, almost 3 weeks ago, I had an encounter with another man. I have only been with one person my whole life before this and so I know I was clean going in.
He gave me unprotected oral sex until I finished. During this I only had his penis in my mouth for a split second, but I think I tasted ***. I did not doing anything else to him.
Before this encounter I asked if he was clean, he said yes, and a few days after this encounter I was very worried about it and I confronted him again and he swore he was clean, that he's been tested before, and that he hasn't been with anyone for about a month before. He isn't like a shady guy so I sort of believe him, but it's my nature to worry a lot.
I don't really have any symptoms, at least none that I know of. I have always had frequent headaches and been tired a lot, so these things aren't out of the usual. There are no signs or anything on my penis or around it.
The only things I have noticed since the incident is that my back has been itchy, or seems like it's itchy more often. And right now i have a cold sore under my tongue. It feels like a usual cold sore and I did have a small sore throat shortly before and after the incident, so I could very well just have a cold. But, I can't remember the last time I had a cold sore.
I have had sex with my girlfriend since the incident, and the only thing she has mentioned is that she has a sore throat in the mornings after she wakes up. Again, probably cold related.
I have been stressing about this a lot, so that might be the reason I'm getting more headaches.
I'm sure I'm just over-worrying and there isn't anything wrong, but I'd like some opinions.