This was a zero risk encounter for HIV. First, it is unlikely she is infected:  people (including sex workers) rarely lie about HIV status when asked directly, and the odds she acquired a new infection in the preceding month are very low. Second, HIV is rarely if ever transmitted from an infected person's mouth:  no transmission by kissing, and in the 30+ years of the worldwide HIV/AIDS epidemic, there has not been a single proved case of transmission by oral sex (mouth to penis). And you used a condom, which is 100% effective in preventing HIV transmission. (Among other things, saliva kills HIV, hence low transmission risk from the mouth.) There are no data on HIV risk from analingus, but for the reason above, it can be safely assumed there is no risk. (The main health risk from the analingus was for her, in the event you happened to have an asymptomatic gastrointestinal virus or other intestinal infection.)

For those reasons, you don't need any testing at all on account of this event. It does not count in any way as a potential HIV/STD exposure. However, in the chance you still want to be tested for reassurance, have a duo (4th generation) HIV test 4 weeks after the event. Three months is old news:  nobody ever needs to wait that long. The 4th gen tests are conclusive any time 4 weeks or more after exposure. (Don't misunderstand:  You are at zero risk and I am recommending that you NOT be tested at all. But from experience with anxious patients, I find that many insist on testing despite strong scientific evidence.) As for other STDs, I also recommend against any testing. But if would like that reassurance as well, have a urine gonorrhea/chlamydia test in a few days and a syphilis blood test at 6 weeks.

I hope these comments have been helpful. Best wishes and stay safe (as you obviously have done!)--   HHH, MD