First off, before ever having sex, educate yourself. Know what is or isn't risky, and the methods you can use to decrease your risks. It is way too late to ask strangers after the fact.
That being said, you are fine. First off, only about .02% of all women living in the us are hiv positive. So the chances of you encountering one of these women is rare. Secondly, it is much more difficult for women to transmit the virus to men. Not impossible, but extremely rare. If you wore a condom, those chances become zero.
If she was hiv positive, and had a very high viral load, you are still fine, if the circumstances happened the way you described. If she were hiv positive, and not being treated, and she was
bleeding inside her vagina, and you performed oral sex on her, and you had open sores in your mouth, and you took her blood into your mouth and swished it around, maybe you would be at slight risk. Since none of those things took place, you are just fine. Now go do some research and determine how to best protect yourself in sexual situations.
