Provera and Letrozole

Ma

Hello I was wondering if anyone here had success with these two combined with Metformin? I have pcos and conceived my son with 3 months on birth control, prenatal vitamins along with metformin and letrozole for ovulation. But I stopped birth control because of the side effects, and my Dr. Gave me provera to induce my periods at least. We are trying for #2 and want to know if anyone had success with just provera and letrozole.