Hi Diana,
I'll answer you by telling you what happened to me. I was referred by my doctor to see a hospital consultant. The conusltant told me on the day that he would refer me for surgery. I think most people are told on the day if surgery is recommended for them.
Being told about the date of your surgery is a complete different matter. I'm still waiting to find out when mine will be. The process for me started properly in Dec '08. I can tell you though, that no matter how long you wait, 3 months or 18 months, it will always seem like the longest wait. The good news though, is that time passes.
BTW, something's gone wrong with your ticker information. Given your height and weight, I'm guessing your BMI is not 82.