As 1summer states, the risk is low, especially when no ejaculation is present. If a condom was used, their is no risk at all. Indeed there are only a handful of cases of hiv being transmitted in unprotected receptive oral sex. You will be fine, i'm sure, but for your peace of mind, have a test 13 weeks after your last unprotected event.
Additionally:
- please remember that 'aids' is not a virus. It is hiv that is the virus and that is what a person is infected with. Aids is a term to describe someone's advanced hiv status after some years of living with the virus. You do not become infected with aids, you become infected with hiv.
- to experience symptoms after two days is not characteristic of ars (the process of turning positive), as this usually happens about 2 to three weeks after the encounter. Two days is far too early.