Plan B Questions

So I hooked up with this guy, might be come something serious. Anyways, we had sex then mid way he pulled out but then realized the condom had completely broke in half. He swears that he pulled out in time because even he feels secured knowing it’s out (I do the same) even with a condom on. We got plan b for safety but I’m also on the pill (wasn’t really consistent last month tho until last week).

You think I’ll be ok? Also never took plan b before and it’s weird shit with my stomach, normal?