I'm a big one for trusting your instincts and I'm w/you, it isn't sitting right w/me either. Definitely seek a second and/or third opinion. It may very well be what s/he said but s/he should strive to put your mind at ease about your beloved furbaby. If you feel that you're being given the brushoff, then waste no more time w/this vet. S/he works for you and not the other way around. Good luck. I hope your kitty gets some relief soon, poor baby.