I am sexually active on BC pills and using the withdrawal method only. We tend to not have sex when I'm ovulating in that week. I have been on the pills for about four months. I have been getting my period on time except last time it was one day early, and it's suppose to come today if it follows being one day early. It hasn't came yet should I be concerned my sugar pills start tonight at 9! Please help! Am I overthinking, it feels like I got my normal pms symptoms but now I'm starting to worry