I had an encounter with a prostitute just over three weeks ago. This involved me receiving a rim job and she also rubbed her vagina on my penis for maybe 30 seconds before having protected sex. We both showered and cleaned very thoroughly before hand, and used mouth wash (don't know if this helps anything).
Three weeks later I started to feel some strange tingling sensation around my anus, with a little upset stomach feeling. The next day I started to have some tight/aching sensation in my lower back right around my tail bone and just above. More aggravated when sitting. Then I've had on and off burning/tingling sensation around my groin, perineum, penis, bladder for a couple days. I have had chronic prostatitis in the past, and some of these sensations are very similar, so I was not overly concerned and figured this is flaring up again. But then last night I started having tingling/burning skin sensations all over my body. This really got me freaked out as I've never felt anything like this before. Could this be a precursor to a herpes outbreak? I have no sores around my penis and nothing I can see around my anus, but that's hard to look at closely.
A lot that I've read suggests these things should have been relatively low risk, but I'm thinking I should get an STD panel done anyway. Is there anything else I should be worried about with these symptoms? It certainly seems possible that this is psychological, but I think I'd rather be safe than sorry. Any help or suggestions would be appreciated!