pcos and metformin er

Hey y'all. 
     My name is Samantha my husband and I have been trying to get pregnant for the past 6 yrs. I have been diagnosed with pcos after having a miscarriage and a tubal pregnancy I have been on metformin before but now I m on extended release and it has helped so much I have lost about 40lbs since starting it. I have only been on it for about 4 months I was just wondering if it has help anyone get pregnant on just the metformin and nothing else I have resently started thanking prenatals to help but I was wondering if there is anything else that I can or should start taking to ttc. We really want a baby. I know he doesn't have a low sperm count or anything l, he has kids,I know that it's my body. I would just like some help from someone that is going thru the same thing as I am. Please any and all comments are welcome!! Please and thank you for helping me out!!!