Well, sounds like you had some classic signs/symptoms of diabetes (increased trips to the bathroom and the fridge, drinking more than usual). I was diagnosed with type 2 about 2 years ago and put on metformin (500 mg twice a day). I was also on Lopressor at 150 mg a day. These days I take only 50 mg of Lopressor and pretty soon looks like I'll quit taking that also, or reduce it to 25 mg daily.
As a stubborn and disillusioned ICU nurse, familiar with how the health "care" system works, I decided to take a different approach and see if that would make a positive difference, lol.
I cut back on carbohydrates and started walking. I have a very bad back, but still manage to walk an average of 3 times a week. I absolutely cannot run/jog but I do try my best to keep moving on that trail.
I never experienced increased hunger or urination, but I would get so sleepy in the middle of the day. There were times when I'd wake up and within minutes I was ready to crawl back in bed.
It's possible your endocrinologist isn't saying much because he realizes those are symptoms of diabetes (so perhaps the thinks, "Why state the obvious?"). Do you have a glucose monitor? I have a few, and the ones I like best are the TREUresult and the Accuchek Nano.
Very glad I went on a low carb diet (I try to keep it below 30 g). When I was on metformin I would still wake up with blood sugar between 140 and 160. These days - though not perfect by all means - when I first wake up the blood glucose runs between 110 and 125, and pretty much normal (below 100) during the day. I also have a lot more energy and no longer feel like sleeping all the time.
Listen to your health practitioners, but strive to become an informed, critical consumer. When I told my doctor that, imho, most health practitioners want to keep you "sick enough", he too busted out laughing (and could not disagree). Think about it... if we were in perfect health, there'd be no need to go to the doctor's, but if they let us die - same thing - no more trips to the doc's, lol
If you're new to the forum, welcome :-)
Lots of experienced, caring people here! Sure glad I found Tudiabetes.