This was my first month on the pill and this sunday was the beginning of the 4th week (when i switched over to sugar pills). My boyfriend and I had sex once since I started the pill and that was on sunday. We're both extremely cautious so we used a condom as well and he checked afterwards to make sure there was no tearing or anything. It's wednesday now and I still haven't seen any withdrawal bleeding. I know that that happens sometimes and can be completely normal, but I'm just worried. Am I being paranoid? I know there's always a small chance that something went wrong, but I'm just trying to gauge how worried I should be

edit: I take the pill at the same time every day and I've never missed a day