Check ups from time to time are probably sensible for any person, same as having your blood pressure or other things checked. For a WG it’s just good working practice, reassuring for her and her clients, although I suspect that the incidence of stds is probably higher among British civvies that British escorts (ie typically AW WGs as opposed to SWs or certain classes of girls pimped by men of a nationality we are not allowed to mention).
But there are responsible habits and irrational worry. I recall a Japanese agony aunt column when I was there a few years ago. A Japanese woman wrote that she had touch the hand rail on a bus that had just been held by a foreigner, and asked if she should be tested for hiv. Yep. They were that phobic!
When a risk is less than 0.1% then getting a check up is fairly nominal. Here’s a standard guidance form with statistics for health care workers. These people are commonly exposed so make things a habit anyway, even when there’s hardly any risk.
External Link/Members OnlyThe consensus of opinion is that fluid-to-fluid (even dried blood) contact is necessary for there to be even a chance of infection. Paper cuts, cuts that have scabbed over don’t count. If I touched a bloodied condom I’d wash my hands afterwards, but mainly because I’d wash my hands anyway. I don’t particularly rub it all over my hands first.
Just follow normal common sense hygiene. There’s a psychological complaint of irrational fear of hiv exposure so don’t fall into that trap. If you’ve had dangerous exposure such as bareback or punting when you shouldn’t be, then wise up! Otherwise get checked at normal intervals, as you would for anything else. Just my opinion, but you’ll find it borne out in medical data so do some googling if you like, but most essentially, get over any panic reaction (which stops rational thought) then move on, undertaking any sensible measures if needs be or new habits with a greater sense of assurance and freedom from worry.