I gave oral to a female three weeks ago. Yesterday I got this red bump in mouth close to my wisdom tooth. 4mm in diameter and 4mm out (yes quite far). Within 20 min the bump shrink and disappeared.
Today it shows up as a small white bump 4 mm in diameter and barely raises up. No redness around the white and no pain.
Could this be related to syphilis? I got a blood test today but don't know for sure until next week.