hiv cannot survive outside its host...and when exposed to air, it quickly becomes inactive.
You didn't have a risk. You cannot contract HIV from environmental surfaces.
So I should not be concerned if the god knows what else could have been a small amount fo blood if some girl had her period and landed on the bathroom floor too? I did not see any blood, but who knows. I am just not a person that goes to these kinds of places and I was out with some friends for a birthday. The next morning I thought about the bathroom situation more and more and it is freaking me out.
No. You cannot contract HIV in that manner.