I've had to change my entire diet. I'm off sugar 100%. Don't eat wheat ( Wheat belly diet has some other options) My diet basically consists of eggs, meat, high fat, lots of veggies and fruit with low glycemic index. No dairy ( or very limited- sometimes cottage cheese) and 2-3 L of water every day.
The difference in how I feel is incredible. The first week I thought I'd die. I had horrible withdrawal and migraines but once I passed that it was like I was a different person.

My best advice is eat a low carb diet, no dairy, not gluten, no sugar. Then do strength training if you haven't started that already. This combination is the only thing that has helped me.

I struggled/still struggle to find the right physicians that understand PCOS and will treat me. I would try another doc. I personally stopped taking metformin because it did not help my symptoms, but it does help a lot of people and I was prescribed it without trying to conceive.

eggs are loaded with hormones

I lost a stone then in one week I put back on 7lb and I didn't change a thing in the diet like you and I just wondered what was the point and just live with it... I'm going to go back to the docs and hopefully see someone more clued up on it.