You don't have to ejaculate to contract HIV. You did have a risk, so testing is advised.
I have another question. I am not HIV infected and I had a sex with a lady 2 weeks a go and I had pre-*** (unprotected) but no ejaculation. I did not have any cut on my penis. Do I have any chance to pick up HIV?
Very rightly explained by Teak and Chris,,,, yes only oral.
i'm curious: would precum in vagina also be low risk. meworried states that risk infection from precum is small. does that apply to oral only? or to vaginal as well?
You have zero probability of catching HIV with this particular event. Oral sex without ejaculation is a zero risk behavior. Precum may carry viral load but possibility of infection is extremely small. In totality, oral is an extremely low risk thing.
Friend, if you are that paranoid about HIV, homosexuality with one timers is not your cup of tea. You will feel the same degree of anxiety after every "encounter" with a new partner. I heard that gays also have committed relationship, that would be a best choice for you to keep yourself relaxed and calm. Once I met a guy from NY (sitting next to me), on a flight from Chicago to Minneapolis who was married to another guy and marriage had to take place in Massachusetts, due to local state regulations.