OH NO

Okay ladies, I missed my mini pill, (progesterone only), by 3 hours and 25 minutes tonight because my fucking alarm didnt go off and I had sex yesterday! He wore a condom to cum but we went without for the first half of the sex. Please tell me my chances are super low of being pregnant, my periods due in 4 days but since I've been on BC its VERY unpredictable. I'm freaking out.

All the packets say if 3+ hours late use backup BC for the next 48 hours but they dont say what to do if you had intercourse BEFORE missing the pill!!!!