Hello. Thanks for writing to us at healthcaremagic
Almost all the STD's like
gonorrhea, chlamydia, herpes,
syphilis etc can be transmitted through
oral sex apart from anal as genital sex.
If the lady in question had one or more of the above, it is likely that she may have passed it to you.
I would suggest that you visit a sexual health clinic for a swab test for gonnorhea and chlamydia. A waiting period of 2 weeks before you go for these test would be advisable else it would be too early to be detectable.
Herpes can be tested earliest at 2 weeks with a
blood test (HSV ELISA) to detect for
antibodies.
Syphilis too can be tested for with a VDRL/RPR test at about 1 month after the risky sexual encounter.
HIV testing can be done with a screening test (Rapid spot test) at about 1 month after risky sexual encounter and should be repeated again at 3 months to cover for the window period (which is 3 months).
It would be better if you can abstain from sexual activity with your partner till you are through all the tests and declared clean