I received unprotected oral (I'm a guy) about 11 days ago. There was some tingling in the tip of my penis for a day or two afterwards which seemed to have gone away. Then, maybe a few days ago, my penis started to feel irritated - not really painful and no discharge - but I'm urinating and defecating more than usual and my rear seems a little irritated as well. Does this sound like an STD? Gonorrhea maybe?