sickandtired

So I have just finished my blood work. I am struggling with wanting to get the surgery done. First off I am not scared of the surgery, I am not scared to die, I am not scared of anything like that. I am scared of getting the surgery than wanting to pig out but cant. I know how crazy does that sound? Has anyone felt this way? I am truely scared that there is no going back and I cant have a huge perogy meal if I wanted to. Please help? i am thinking once its done its done no turning back time....