A little anxiety please help

so my bf and i are planning to have unprotected sex for the first time. i’ve been taking sprintec since august, just started skipping my period last month, and i think everything is good to go. i’ve only missed a day once back in february and i took two pills the next day. i also usually take my pills within 30mins-1hr of the same time every day, but of course there’s been a couple times where i’ve taken it late. am i good? or should i bring some plan b just in case? i’m really anxious about the whole thing bc the last thing i need is pregnancy. for those who provide help/insight, thank you very much.