I do worry a lot about STDs and am quite rabid about practicing safer sex. Most of my clients understand this, but you always get the idiot who wants to go bareback. For one thing, NO NEVER WTF IS WRONG WITH YOU? For another, they never seem to realize that an escort who lets one client skip out on condom use is almost certainly letting scads of them do the same, ugh.
Fortunately, I've never caught anything from this job but a ton of UTIs. I did catch HPV from the guy I lost my virginity with (I'd never done anything but kissing before him, too), so go figure.