There is a possibility I'm pregnant, it would be pretty early but I started bleeding and had a pretty big clot. How do I know if I got my period or if I had a misscarraige?

From the way I understand it, there is no way to tell if you were pregnant unless you tested before and it was positive.

Without a proper diagnosis from a doctor, there is no way to tell if you had a miscarriage. Sometimes we have clots, other times we don't.

If I may ask, why do you think you are pregnant? More info is needed for a proper answer.