Im not sure if this is in the right place but it is to do with my AF so sorry mods if im wrong.

So my blood test came back and im not pregnant. Phew!

However my insulin results were pretty high - 28 and that was fasted and my blood sugar was 5.5.
The Dr suggested I could take a course of metformin to try and lower my sugar and perhaps regulate my all over the show long periods.
They are currently 2 weeks long and I now have mid cycle bleeding too.

Is it worth it? I have heard there are some pretty nasty side effects and if im not trying to get pregnant are the other benefits of it worth it??

I mean some weight loss would be fantastic, I have mild hairiness - would it help with this? But what else could I possibly expect?
Also can I take it while breastfeeding?