I had unprotected oral sex with a guy 5 months ago, i was the one who received it. Is there any chance i can get syphilis thru this? Last month, i saw a pimple-like thing on thigh, i scratched it and it was kind of peeled off and bleed. It did not end up like an ulcer but it looked like the appearance of flesh and dried up. I know maximum incubation for syphilis is 3 months so the possibility of me having chancre last month is quite low. However, i had a flu within the 3 months and i had about 6 pills of amoxycillin for it. Would the medicine postpone the incubation period?
Since you're concerned, have a blood test for syphilis, which almost certainly will be negative. When it is, you can move on without worry.
Best wishes.