Ovulation & pregnancy

*repost because I didn't write this right the first time * 
So me and my boyfriend had sex last night and we usually use protection , but we didn't last night and when we were almost done he told me he came inside of me (a couple times)  , I'm just kind of freaked out because I am not ttc , but I am going to be ovulating in 2 days  .. But let me get to the point .. Could pregnancy be guaranteed because I start ovulating soon   ?