Oral sex exposes you to gonorrhea, syphilis and herpes. 17 days is not enough to get accurate results from a STD test. You should test as follows :
-3 weeks after the exposure, for gonorrhea.
-6 weeks after the exposure, for syphilis.
-3 months after the exposure, for herpes.
If you have a discharge, please go straight to your doctor.
Let me add i never had sex without condom ..
Only oral without condom...