sex with an unknown hetero male

Hi, I am a 19 year old female and I am concerned about something I have done over this past summer. My brother is now friends with a guy whom I graduated highschool with and we have been "seeing eachother". He openly speaks about his sexual encounters and has never used protection. He says he has been tested already three times and is clean. One and only one of his encounters was a stripper whom he had sex with while he was living in Nova Scotia, he says he has been tested since then but I am a paranoid person. One night I was really drunk and we ended up having unprotected sex and I feel completely stupid since I know he sleeps around. The sex wasn't exactly short but he didn't cum inside me. I am planning on getting tested anyways but to ease my mind...what are my chances of contracting HIV from this single exposure with him? It's mostly the stripper that worries me...It was in Nova Scotia where I have heard there are less HIV cases, and female to male contact is supposedly lower risked but I still want to know how worried should I be???
Thanks

[Teak]

You can obtain your conclusive test result 3 months post your last unprotected sex.