unprotected sex (condom slipped out) with a prostitute

Hi! I had unprotected sex (condom slipped out) with a prostitute and was very much worried. I paid extra money to prostitute and got her tested for HIV I & II the next day of exposure which were non-reactive (0.10 S/CO)! What is the chance of HIV infection to me?

[LIZZIE LOU]

condom slipped out?

[sk4]

yeah not sure how that happened! I was drunk, I took it out when I felt wet, It has been almost a week, I do not see anything irregular as of now...What is the chance of HIV infection to me?