I've worried about this sort of thing. Swallowed pussy squirt, licked pussy etc. I went and paid £300 to Better to Know for a private next day STI test. Full blood test, six major STI.
Nothing, absolutely, nothing..
Google Cunnilingus risks. It's very very low risk. I wished I'd done that before I panicked.
Feel your pain, but I'm sure you'll be fine, Get tested, on the NHS...