I just had my surgery on Aug 21, 2017. When I went in to see the doctor the beginning of July, I was 31.8 BMI, 174lbs, 5'1". My doctor only put me on a 3-day pre-op diet, and on surgery day I was 31.1 BMI, 170. It has now been 35 days, and I am down 17lbs. I am so glad I did this surgery. I was afraid the doctor would tell me no when I first went in, but he was completely understanding and agreed it was better for me to get it done now before I was 40 BMI. I should also add, I did not have any co-morbidities. He gave me other options like lap-band and the balloon, but after much research, I decided gastric sleeve was a better option because it is permanent. I didn't want a temporary fix, because I knew once I lost the weight, I would have a really good likelihood of gaining it back once these devices were removed. I had such an easy surgery and recovery. The only issue was the bloating from the CO2 gas they use to blow up your body cavity....and that was just discomfort...not horribly painful. Ask your doctor if he uses Exparel....that was what my doctor used in my surgical site and I really had zero pain.