it is ok. sometimes i reflect back on a night that if I would have pulled the trigger, i would be in jail forever. no details offered.... but i was just a kid. fortunatley i did not... but it is a moment that i still reflect on and shiver.
the point is, it did not happen, so let it go, it is over, learn from it and go on.
Your worried about something from a year ago? But you were negative. I don't see how you have anything to worry about. You already tested negative.
No way do you have HIV!
You had minimal risk to start with and you didn't even really need to test.
Yeast infections are very difficult to get rid off sometimes and there are a million reasons why people get them.
Work with your Doc.
If he can't help you, try alternative approaches (probiotics, diet, etc.)
But forget HIV.
Be well