I'm not on metformin... Should I be?

Shayna
I was finally diagnosed with PCOS officially after having to have some large cysts removed last month. My dr has me on clomid but not metformin. A couple years ago a different doctor had suspected I have PCOS but I wasn't TTC so they put me on metformin but I eventually stopped taking it. So I'm not sure why I'm not on it now. Any ideas?