That happened to me on one random day in like theatre cos it was really really hot, n i started to feel faint and had to leave the room to go outside, and i felt like a bit of a wuss and like they'd judge me like clearly not vet material, when im fine with blood etc etc, it was jus that particular day.
And as for them making you feel bad, quite a few of the nurses when i was on small animal work experience were snappy and stuff and made me feel like they didnt have time for me, which in turn made me less keen to ask questions. Also, by the time i'd cleaned kennels etc, id start to watch consults for a bit, then theyd ask me to hoover and mop the entire practice like when most of the vets and other nurses had gone home. Also there was this one occassion when was like literally squirting blood and diarrhoea (sp) all over the room, and the et was un-fased like o deary me etc, and i thought il wait til the vets finished the examination and gives me the ok that its safe for me to start cleaning up after it before i do, next thing the nurse walks in and has a big go at me for not cleaning it up straight away! Nearly cried, cos i thought really hard like o what would the vet want me to do here, and turns out i didnt do the right thing pffff.