
You are already 100% about the HIV thing if you both are negative. You really can relax about
that.
Any time you have an infection, you can get swollen glands.
I
don't know about the bacteria for folliculitis entering your bloodstream during unprotected sex, but you could have gotten the bacteria on your
skin at
that time, if she had it too.
So far, it sounds like YOU are the one with the infection,
not her. I'm doubting seriously
that it has anything at all to do with sex.