First, even if you had entirely unprotected sex (i.e., for several minutes) and if your partner had HIV, the statistical likelihood you would have been infected averages 1 chance in 2,000 episodes of vaginal sex. Second, symptoms never are valid indicators of new HIV infection, because every single symptom caused by HIV is also caused by many other things, all more common than HIV infection. And your symptoms don't sound like HIV anyway, as your own doctor already told you. HIV testing is a good idea for anxiety relief when you learn the negative result. However, 13 days is too early; you'll need another test, preferably 6 or more seeks after the event.
Thus, the direct answers to your questions are: 1) Less than 1 chance in many thousand. 2) There is no reason to suspect HIV as the cause of your symtpoms. But they're not entirely due to stress, which doesn't cause mouth ulcers. Most likely you caught some other virus at about the same time, maybe from the sex worker, maybe elsewhere.
Follow your provider's advice in regard to follow-up HIV testing. But you can relax in the meantime; almost certainly you were not infected with HIV.
Best wishes-- HHH, MD
Just two final clarifications and i will stop then.
If ARS did occur would all symptoms come together?
Could the antibiotics i took have caused the white tongue and mouth ulcers?
This thread is over.