Lightweight Question

I was wondering the same thing..I'm 5'1 and I started out at 218, then when I started doing the protein shakes and eliminating 1 meal a day and dieting I dropped 13 lbs in a month and they were about to throw me out of the program, so I stopped doing everything I was doing and am ranging from 212 to 216 depending on the time of month.  I go for the surgery on the 21st.  Sometimes they say that there will be dramatic weight loss in the weeks following the surgery, and sometimes they tell me it will be slow going.  Its actually all kinda confusing.