From what you described, you are not at risk for getting HIV, chlamydia or gonorrhea. There is always a chance that you could get a skin-to-skin STI such as syphilis, herpes or warts with oral sex. However, your oral sex was protected, so you should be OK.
It is always a good idea to get routine screening if you are sexually active. However, your chances of having an STI that we can test for should be low, if at all.
You might want to check out our charts called “Know Your Chances“. They give lots of information about ways of having sex and the chances of passing or getting an STI.
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