sex during your fertile window

So, i had sex with this guy three times while i was on a cruise. don't get me wrong, it was the most amazing sex i've ever had, but we didn't use a condom because we were both really drunk. i know he pulled out in time and we didn't even have sex that much. Most of the time he was just stimulating me (holy crap i've never had so many orgasmns) but i'm still worried. How much does it increase your chances? I know this sounds like i'm a whore but i wanted some fun because my love life sucks all the damn time, you feel me? A girl needs her sex. I've had sex on my fertile window before without a condom and i've always been fine but he is totally freaking me out.