I had unprotected oral (giving), with a female CSW. Although I know syphilis is rare I'm very worried about it. My partner kissed me on the lips 24/48 hours after. What are the chances I transmitted, if I had it? Dr Google says that it cant be transmitted soon after incubation. 4/5 days later I had a sore throat, no obvious lesions, I know this is early for syphilis but I've seen studies from the 50's saying that symptoms can appear within 4 days. 

My doctor suggested strep infection and gave me Doxcy. Sore throat disappeared 2 days later.

My overall fear is if I could have transmitted anything prior to the antibiotics. My only act were dry kisses, only once on the lips.

Thank you