Dear Doctors,
I was trying to piece together answers from your repository but decided it might be easiest to just come straight out and just ask - if I were to visit a trans-female sex worker and gave fellatio and analingus, what are the risks for any STIs, HIV, etc..  Assuming there is some risk, if afterwards I wanted to make 100% sure I was clean and would not infect another person, what tests should I do?  For any possible risks, what would be the treatment?  Are there risks of any STIs that could result that I might not be able to get rid of?  Is one of these acts safe and the other not?