First let me start off by I have PCOS. And I’ve been taking Metformin since late December of 2020. I’ve noticed since starting Metformin that I will spot for a fees days if not a week and then get my period. Is that normal or should I talk to me Dr. about that?

Pic below shows how it usually spots before AF

It usually starts off as something like this or lighter and then AF comes. Can anyone else tell me if this has happened to them, while taking Metformin?