10 days away from the beginning of my new life????????!

I can't believe my 6 month waiting period is over. Im glad I had that time preparing myself for gastric bypass but also the time I had with the dietitian helped me. I'm just got the approval from Blue Shield and my surgery is on the 23rd of Feb. I have such mixed emotions. I'm super excited to get healthy and lose the 100plus pounds I need to lose but I'm also scared and nervous. I started my journey at 292lbs and now 10 days from surgery I'm 268lbs. My goal is to get to 140lbs. I am a huge cola drinker so that's one of my biggest worries. I get severe headaches without caffeine and no soda is gonna definitely be a challenge. I decided after my 3rd failed back surgery that I needed to try something else. I have chronic back and leg pain along with fibromyagia. I'm hoping that as I lose the weight it will help with the pain. I have read so many stories on here that have been so motivating and encouraging to me. I hope that everything goes as planned and that the pain afterwards isn't to bad. Any information about your weight lose and your post op pain would be helpful. Also would love to hear about what everyone used during the liquid diet part of the process. Hope everyone is doing well and reaching their goals.