So my period was suppose to start on the 9th and I'm really worried that it hasn't come. I recently came off the pill in January and was thinking that may be the reason. But for the past two months it's been around the 9th. I had sex a few days before my period but we used a condom and it was the first time I had sex in a few months.

I'm starting to worry myself to the point that I'm nearly in tears

I have no idea what to do and if I'm just overreacting...