Tonsil cancer

Hi I can't believe I'm actually on here writting this and don't really know where to start 

I found lumps in my neck a few months ago I didn't bother  going doctors as thought it was nothing but then I notice a sore throat and the Continuous feeling I had something stuck in my throat so to cut a long story short after CT. MRI and PET scan and biopsy's it was confirmed I have cancer 

I was due to have tonsils out Friday 26th Nov but due to an emergency in the department it got  cancelled so now I'm going on Wednesday obviously im really nervous as they told me that the older you are  the more painful it is after the operation but having said that I would rather get the cancer removed they have also told me that while  under I will checked to see  if the cancer as spread onto my tongue and other place 

after reading all the tonsils cancer forum I'm bricking it

My Surgeon as said after my operation we will discuss any further treatment I really don't know what this involves so any advice please I would really appreciated it  thank you