advice and reassurance!🤍

 so me and my boyfriend had oral sex and he ate me out but he was about to go in raw and it was like near my vagina and he precums a lot but he thinks there was nothing there but i think there is a slight chance he might’ve got some on his fingers and in but im on the pill for birth control this was two weeks ago and im late on my period for 2 days. but last night we had protected sex however the condom was slipping but we just kept pulling it down and he pregame a lot in the condom but we still took a plan b should i be worried?