I missed the pill

Im fairly new to taking BC, this will be my 3rd month on the pill so I don't really know "the rules" of it, so I forgot to take my BC for 2 days, more of a forgot to pack it for my weekend vacation. Me and my SO had unprotected sex but he didn't ejaculate inside of me at all or wasn't even close too we just stopped for no reason. But now I got it in my head that what if he pre came and I wasn't only BC for that day. Is this something I should be worried about? Or am I over reacting to the situation? I took my pill as soon as I came back home, I'm hoping those 2 days without it didn't throw anything off.