Hi all, about 3 months ago, I had sex with a lady. It was protected with condom and I tried to give her oral but since it was my first time giving oral, I didnt like it so I just licked here abit. Then about 2 weeks ago, there were some red spots on my penis after masturbation, and I went to a GP. The GP said it was some burst capillaries and prescribed me with prednisolone. Then about 2 days ago, I noticed a white ring forming with a red patch at the tip of my tongue. It wasnt painful, not sore or anything, just sits there. The ring got bigger today, so I was anxious and went to see 3 GP. 2 of them were saying oral thrush but the other wasnt sure and ordered me STI check. So, before I do the check, just to calm me down, any of you guys experience similar things? Could it be STD? Thanks