What are the odds?? 😬

I just really need some reassurance. My period is due in 6 days but I'm just scared and anxious currently. I had sex one day before ovulation (2 weeks ago). We used a condom (didn't check for any holes but I don't think there were), he didn't ejaculate and wasn't close to it, and I still bought plan B about 36 hours later because I'm so paranoid. I'm just worried if there was a problem with the condom and precum and such. I'm bloated and have headaches and cramps this week so hopefully that's a sign of my period coming. I sometimes feel sick to my stomach but that could be my anxiety.  However, I'm still really worried. What are the odds of me being pregnant?