TMI - blood clot/miscarriage?

Shea

I had sex on 10/20, the first two times were with a condom, and the last was not with a condom and he did not finish in me. I was due to have my period on 11/22, but it came a week and a half early with extreme pain and much heavier bleeding than normal. I passed this blood clot this morning in the shower - do you think this is just a bad period or did I miscarry?