So on February i made a stupid mistake that i regret i went to a adult book store and perfomed oral sex, the oral sex lasted only for a minute or so cause i stopped, there was no ejaculation, I'm sure there was no pre cum i didn't taste any, and there was no erection. just a quick oral. Now its been 5 weeks since and i notice having a light yellow coating on the back of tongue and a few tiny red dots in the front but i have no pain in my mouth, i haven't been sick with the flu, i have no bad breath and i can swallow food and liquid with no pain, i also have some bumps forming at the corner of my mouth that can only been seen when raised but there are no symptons of burning or itching they seem to be forming on my lip too i looked online and it can be possible that its just fordyce spots but my question is what can be causing the yellow coating on my tongue? Can it be a oral std? I have no pain or can it be hiv? Can you get hiv by the way i describe how i performed oral