There is no realistic chance of catching HIV. No household members of HIV infected people ever catch HIV, unless they are also
sexBuccal smear
Causes of sexual dysfunction
Child abuse - sexual
Delayed ejaculation
Erection problems
Female sexual dysfunction
Inhibited sexual desire
Orgasmic dysfunction
Puberty and adolescence
Rape
Safe sex partners or share injection equipment. And breast
milkBreast milk
Breast milk jaundice
Lactose intolerance
Nipple discharge - abnormal is not highly infectious. The amount of HIV in breast milk is extremely low, usually not there at all. Among babies nursed by HIV infected mothers not on HIV treatment, 85% never become infected, despite swallowing several ounces of milk every day. If your partner takes anti-retroviral treatment, the risk would be even lower.
The only thing a household member of an HIV infected person really needs to worry about is blood exposure. Don't share razors, for example; and if the infected person bleeds, wear gloves for clean-up and wash well with soap and water. (Even without those precautions, the transmission risk is extremely low.)
Given your anxieties, I suggest you have a frank discussion with your roommate and ask to accompany her the next time she visits her HIV provider to discuss your concerns. While there is little if any scientific basis to your fears, they are understandable. You'll feel better if a real HIV expert reassures you.
Good luck-- HHH, MD
9+ times - infection.
Are you serious?