Hi,

I can't help with it all but maybe can with some.
You talk about a FS/endo - is he a 100% endo?? If not - go see one.
Yes metformin can help with ovulation and hence fertility. It assists some with weightloss but not all.
You need to follow a low GI diet for insulin resistance so if you are not sure, please see a dietician.
You really need to get your sugars under control then because you're 39 would tell you to run - not walk to IVF.
Don't mean to frighten you but there are/were a lot of us here that just started too late and would hate you to experiment first before
going to the hard hitter - IVF.

Good luck..