After having unprotected oral sex with new partner I noticed a small reddish area on penis,just below the head. I had burning sensation in and around my lower parts. That seem to have gone away(,didn't look like a sore,didnt crust over) Now i have a rash on my left inner thigh right in the crease. They look like pimples with no white heads.(about 15-20 of them) they don't hurt but do itch now and then. Had them for about 1 week now. Have been very worried about the unprotected oral. I do still get burning sensations and the feeling of "pins and needles" in my scrotum and penal area.Could this be a STD?? Thanks