Hello Adriana, I just entered my 6th week, post op! I have lost 33 pounds so far! I started out at 187 and am now at 154. Size 20 to a 12-14. I am 4' 10" tall. It has been well worth it to me! I did not cheat on my pre-diet, like you, fear kept me from it ! But I am happy I didn't. I had no complications during surgery even though I have micro vascular heart disease and have a past stroke history! I won't lie to you, I had a lot of pain, especially the first 4 days after wards, but I am allergic to opiate pain medication so I did the surgery on Extra Strength Tylenol! The post op diet the first two weeks is not a lot of fun, Clear liquids then thick Soup style foods/protein drinks! But the time flies fast and the third week you start adding real foods! I would still do it all over again! I have had NO nausea and vomiting, BUT I adhere to the diet plan completely! It you do that, I can safely say you will not have any problems either. The two friends I have who did not adhere to the plan had the nausea and vomiting! I also take Gummy Multi Vitamins every day and supplement with 1 Protein drink a day split between meals as part of my liquids to make sure I am getting enough protein and vitamins every day. I wish you all the best with your surgery!