hi the experiences im having with getting food stuck is not really scary, just bloody annoying! i sit down with a healthy something to eat, two mouth fulls in it gets stuck.by the time ive sorted my self out and feel ready to continue, the food is cold and horrible.in the end i just admit defeat and give it to the dog!! the dog is gonna need a band at this rate! when you have to be sick,theres no heaving as such.its like saliva builds up on top of the stuck food, then you just know youve got to get to the loo.. sometimes just the saliva comes back up or saliva and food. it kind of crawls out (gross) no heaving, no noise, no pain, just inconvenient. i hope this helps, good luck with your surgery