Chris
First of all this is not something to play with. A thyroid problem is not that bad to treat if that's what this turns out to be. Go to your doctor and tell him/her your symptoms. If it turns out to be your thyroid it can be treated with oral medication and can go into remission where you will have no symptoms. It really isn't that big of a deal. But don't play around with your health. All the doctor will do is prder a blood test and may be a few other test to be sure, Don't worry. WHat ever it is needs to be fixed. Losing weight like that is not good.