Oral sex exposes you to syphilis, gonorrhea and herpes. HIV risk through oral sex is negligible. There are even experts that say there is not a risk at all.
You can go for a full std screen;
-28 days after the intercourse you can test for HIV using a duo combo ag/ab test. But if you want to use an antibody test (finger-prick) you will have to wait for 3 months to get accurate.
-3 weeks after the intercourse you can test for gonorrhea.
-3-6 weeks would be ok for syphilis, but if you get it negative, it would be interesting to re-test after 3 months, as there are people that take longer to show any symptom.
-3 months after the intercourse you can test for herpes.
It’s been a month since my last encounter. I don’t have any symptoms like I read in the forums here. Do you think now would be a good time to do a comprehensive test for all? Thanks