I use my room mate tooth brush five minute after he finish using it he is hiv+ what are my risk of?

As far as my education goes for HIV, I've heard from health care professionals that small amounts of saliva have a minimal risk transmitting the virus. It depends on if ur roomates gums were bleeding from brushing his teeth before u used the toothbrush. I think that you need to seek advice from a medical professional to be on the safe side though.