I had sex without a condom for the first time. My boyfriend and I always use dual protection to be safe but we were caught in the moment and he didn't have one and I said it was fine since I was on birth control. I've been on Minestrin birth control for about 4 months. The only reason I am really concerned is because starting THIS pack, I changed my time from 9pm to 10am. I take it throughout 10am everyday but I did take it kinda later one day maybe 5 hours late. I'm on my second week of pills right now. Should I be concerned? Should I take Plan B?