concerned? you had SIX exposures, didnt you?
if your test will be 3 months post your last exposure...then it will be conclusive
Although those deomgraphics have a statistical higher risk of HIV than others, you should remember that ANYONE can have it and all types of people are positive so you should start using a condom.
However it isnt statistically likely that you will be positive, even if one of the those partners was positive so dont fret too much, good luck.