high risk for HIV ?

Hi, I had protected vaginal sex with an escort last week. At the end I notice that the condom had slipped towards the end of my penis but was still covering the glans. This has got me somewhat concerned. Maybe I am being paranoid but I cant help thinking that perhaps some of her bodily fluids may have worked their way through the base of the condom. I have been really worried since. I had a HIV test yesterday day 6 post exposure I know this is quite early but I opted for the duo test which tests for the P24 antigen as well as HIV 1 and 2 antibodies. The test came back negative. I am still worried though because I have read that the P24 antigen peaks at around day 14. My logic is if I had contracted HIV surely the test would have come back with some kind of positive result. Am I being paranoid here? Do you think what I described put me at high risk? your advice is much appreciated.