I had a gastric by pass done years ago. I too go days on end without eating. I look the same as you in the mirror. it is horriable. look like a bag of bones with skin. I have diabeties too so this is not good but cant help it. the dr said I have anexoria nervosa starvation type. and today was diagnosed with failure to thrive. was prescribed marinol to get me to eat. I did not work the last time. guess we made a big mistake with surgery. I did anyway, I felt better fat. I still feel fat but I so skinny, I just cant see it. who knows. you are not alone.....donna