Receiving oral sex puts you at risk for genital herpes type 1, gonorrhea, NGU/NSU and syphilis.
It's too early for syphilis symptoms, and the only symptom you'd see for that is a painless sore.
If you don't already have hsv1 orally, then you could get that genitally. (If you have it already, you have antibodies that prevent you from getting it again in another location.) If the second escort who actually performed oral on you didn't have any sores on her mouth, it's not likely that you'd get herpes if it was that brief, but it is certainly possible. Did you kiss her? IF you didn't, it's not likely that you'd have a sore throat from this, as you wouldn't have been exposed orally.
NGU/NSU is an infection in the urethra that can be caused by normal mouth bacteria entering the urethra, but you would have symptoms in your urethra - burning, pain, itch, maybe discharge. It wouldn't give you any symptoms anywhere else.
Gonorrhea would give you similar symptoms as NGU, and wouldn't cause symptoms in other parts of your body.
Neither gonorrhea or NGU are transmitted by kissing.
Chances are pretty good that it's something like a cold, strep, or another upper respiratory infection. You should get it checked, especially if you don't see any improvement in the next few days. Unless you see genital symptoms in the next couple of days, or you kissed either of them, I don't think it's herpes.
Hope you feel better.