About a month ago ..

A
I was diagnosed with pcos 
I mentioned to my doctor I was trying to conceive 
So she put me on birth control for one month ( one pack ) and metformin ( started with half a pill , then a week or so into it I went up to a whole pill ) she told me to keep taking metformin after I was done with the pack of birth control . Does anyone know if that can help to conceive ( metformin ) & in what way ?