So is it safe to say that I am in the clear?
No need to test... I wouldn't worry about it.
Take Care...
If you have never had symptoms of herpes (painful recurring blisters on your genitals) and your only exposure was oral sex once, I believe most doctors would say that there is no need for you to get tested.
Even if you were tested for HSV1 and it came back positive, there would be no way to know whether that was a genital (possible) or oral (more likely) infection. Most adults test positive for HSV1, probably from being infected orally as a small child.
I would definitely drop it and move on.