Early, Heavy Period???

Sophia

So, my period arrived 3 days early, and day 1 it's SUPER heavy. Usually, my period isn't worse than a medium flow, but it is now?

I'm not sure why, either.

1.) I'm not stressed out

2.) My period is usually consistent

3.) My first period was almost 3 years ago

4.) I've gotten my 2nd COVID-19 vaccine over a month ago

Does anyone know what this might mean, or is it just something that can randomly happen?