You did everything you could to lose the weight but if your body's not working with you then that is in no way your fault. Be proud of what you achieved. Be proud that you persevered, because many wouldn't. I only hope that they manage to establish quite quickly what's going on internally and are able to rectify it. Who knows, perhaps we'll see you back here shortly, saying "All sorted!" - I sincerely hope so.
I'm the only person alive who's not on Facebook, but I'll always be here if you ever need a friend. I'm really wishing you all the best for your tests and hoping you make a very swift recovery from whatever's causing this. It's a little blip, but you'll still achieve everything you want. xxxx