I agree with GuitarRox, and syphilis is fairly uncommon in most developed countries. You had protected everything, and keep in mind that most escorts do that to protect themselves, not you, so chances are good that she doesn't have syphilis either.
To get syphilis, your body needs to come into direct contact with a syphilis sore. Did you notice one on her where the condom wouldn't protect you from?
If you have red lumps, it's not an STD, but you should get that checked.
You had about the safest sex you can have with protected vaginal and oral. Glad you did that. True, skin to skin poses small risk. But symptoms would not show up in 24 hour, that's too soon. This does not sound to be std related. If you feel you have symptoms, that is when it's appropriate to test. In the abscense of symptoms, you wouldn't need to test for this exposure.