Almost 4 weeks ago I received unprotected oral sex from a sex worker.  I Lately, I have sporadic tingling/burning sensation AFTER I urinate or ejaculate. I have no other symptoms associated with an STD. The sensation doesn’t happen all the time. Sometimes I’ll feel a tingle at the tip of my penis, if I sit without any underwear on, the tingle will go away.I got tested for  chlamydia and gonorrhea (still waiting on results).  The doc said it could be chlamydia, probably not Gonorrhea. While waiting on the results I’m just trying to ascertain of this could be an STD or something else.