Bleeding during sex

For about a week now me and my partner have tried to have sex but it’s painful when he tried to insert himself. Today we tried again, finally no pain but about halfway in there was this pain and I bled kind of a lot, enough to drip into the toilet when I sat down. I’m not in my period. The bleeding has stopped but now I’m concerned as to what could be going on. I had bled about every other time we tried this week but never had a flow. I’m scheduling a doctors appointment tomorrow but I’m so worried. Has anyone experienced anything like this ?