Birth control making you bleed during sex

tiniesttiger

So, a while ago I went on the pill so that me and my bf could have unprotected sex, but soon after I started to bleed during and after sex. Later on it started to become painful to the point where I couldn't enjoy it. After we broke up I decided to go off the pill and once I did have sex again (with a different guy) I didn't bleed. Does anyone know if this could be some reaction I had to my birth control? Or if it could be something else? Please help because I am considering going back on the pill but I'm scared it's going to make me hate sex...