Hi Camilla i had a gastric bypass last August best thing i could have done. Have lost almost 8stone since last JUly almost 6 since my op. It is worth it, some people have some after problems i will not lie but most of us have very few, constipation is a common one but other than that the fun starts trying to see what your new little pouch will let you try to eat when you come home. Make sure you take all meds given to you someyou will be on for life because of the poor absorbtion you will have after the bypass. Its a new healthy regime you have to adopt and stick to the rules your dietician gives you and you will be fine, best advice i can give, we were all scared before hand but when we look back we wonder why, like you i was excited too, good luck hope all goes well on 30th xxx