But in the mean-time, I'm scared. I've had to add 3 notches to a size 44 belt, and now I'm working on a 4th. I also sweat alot, am tired, and drink alot of water. Oh, and I shake.

Have you been tested for diabetes? It fits all those symptoms.

If not, surely you know someone who is and ask them to check your sugar levels several hours after eating or before breakfast. This could be a cheap 'first indication."