Call every morning to see if there is a cancelation? Getting the biopsy done will bring you the answers you need, in the mean time ask for a xanax or something to reduce the anxiety if you need it.
You are right about nutrition, it'll help you recover faster. Scrambled eggs with cheese was one of the few things I could eat. Slimy food it the best, overcooked veggies work like asparagus, mushrooms too.