You were just diagnosed. Your body has gone through a trauma. It is not uncommon to suffer hair loss after something like you have gone through. Your body suffered terribly high blood sugars, you probably spent a bunch of time sick with emerging DKA. Your blog says you lost 20 lbs. Hair loss after weight loss also happens.
Your hair normally rotates through going dormant and rest before restarting growth. When a follicle restarts growing hair, the old hair falls out and a new one starts. Basically, during the time your body starved, it stopped your dormant hair follicles from restarting in order to conserve energy for more important stuff (I know your hair is important to you). Then when you got back to not being in DKA and starving, your body restarted all your hair follicles that had been dormant. And when they restarted, the dropped the old hair and started a new hair and you have hair loss.
I'm not saying this is what happened to you, but it is an explanation. I would still talk with your doctor about it.