I Gave A Man A Blowjob The Other Night, Complete

I gave a man a blowjob the other night, complete stranger and I'm freaking out, besides the point this was male to male. I went to urgent care and was given antibiotics one single dose four pills and the other for ten days. Was to early to test, so if I actually was given something do the antibiotics work or do they not work until incubation period?