Taking birth control, took last two late, don’t know if may become pregnant or not

Patient: I’ve been taking birth control for about two months now. I decided to take them at 2pm each day but the last couple times I forgot and took them at 8pm instead. I have never skipped a pill altogether. Last night my boyfriend and I were doing stuff and the condom fell off, not inside me but in between my legs. I saw stuff and cleaned it off but I’m still really nervous. My boyfriend says I should be ok because I do take the pill daily, but since I took the last two a little late I am not 100% convinced. I am wondering if I should purchase a Plan B pill or should I be ok?