Late pill and pregnancy

I took my birth control pill late(1-3 hours late,sometimes minutes)on multiple occasions(about 5 times) and I missed a placebo pill one day. I had sex during the placebo pill week, now I’m afraid I’m pregnant. I experienced very mild cramps below my belly button. And now I’m currently experiencing very mild bck cramps. I’ve only on birth control for a month when the sex happened. Now I been on it for 1 month and 3 weeks. I haven’t been late since the sex. What are my chances of being pregnant?