I agree. You need to wait a week to test for gonorrhea, NGU and chlamydia.
Don't panic though. If you noticed the break as soon as it happened, and stopped, you are probably fine.
Aj
Just because she was a hooker doesn't automatically mean she has an STD, and most symptoms will not show up for another couple weeks for anything, so you shouldn't be stressing right now. Getting tested is always a good idea, but it may be too early. good luck.