I have had high anxiety about this exposure that occurred a week ago.
I decided to experiment and met with an older gay man (I am bi curious at best). I jerked him off with lube, while he fingered me with lube. He has just had a shower when I arrived, and he was only semi hard, so he hasn’t touched himself much (if at all) before we began. While I jerked him there was a fair amount of precum. About half way through he took over masturbating himself while I watched. Without thinking, he then continued fingering me with the same hand. After about 5min, I realised and quickly stopped proceedings. He did not cum at any point during this encounter. Once I stopped things, I wiped my hand and butt with a crusty towel he had and I left.
Should I be concerned about this exposure? It is the ONLY encounter I have had since a clear full STD panel in June. Main concerns are chlamydia, gonnhorea, and syphilis. Butt has been a bit irritated and looks like a small bump (not ulcerated) in there, but I may have a hemmhoroid/fissure.