Can i be pregnant?

Emily

So I have taken birth control since i was 16 (I’m currently 20.) me and my boyfriend had sex during the first few days of this new pack and i let him finish inside me. My ocd self still freaked out since i took two packs back to back before with no placebo pills so i went 6 weeks without a period and i went and got a plan B 48 hours after. How likely is it for me to be pregnant? Even though i took two packs back to back and had my period the week before and never missed a pill i am still just a little anxious. My period is supposed to be here in 2 days