I had a drain as well for my sleeve, right hand side of my tummy, about half way down. Doesn't hurt at all and they'll usually take it out 2-3 days post op. They use it to make sure there's no pus or anything in the abdominal cavity. If you don't like the look of it, they'll have things they can hide it with so just ask for it. I'd say the main annoyance was having to carry it round with me for 3 days! xx