I'm stuck!

Maggie • Just livin my life❤️
My boyfriend and I had sex and I have been on birth control for a little over a month I have taken it at the same every day, only 2 days I have taken it an hour over my normal time of taking it. We didn't use a condom, we used the pull out method.  But he might have gotten some pre cum. I think I'm fine but I'm torn between whether I have to take plan B or not!?