Just wondering what you could tell me about Hepatitis B. My mother was just recently diagnosed with it, so I'd like some more information about what it is, what it does, who gets it, and the like.

I got tested for HIV a year and a half ago. Since then, I've been with two other people. One guy was a virgin but we had unprotected sex sometimes. He was tested in December (after us being together for one year) and it came back negative. I'm afraid to get tested again because I heard that the guy I was with two years ago before I was tested is HIV positive. I was already tested after I heard this and it came back negative. But, people around campus just won't stopped talking and I'm starting to panic. So, I thought about doing an at-home test because I'm too scared to go to the clinic. I found an at home test that says that you can get at home results in 15 minutes.

It's called the HOME ACCESS and it says it's FDA-approved. Is this accurate? Also, I have another question: with the information I provided you, do you think I'm at risk?

My boyfriend claims he is HIV negative based on the fact that his blood donations have not been rejected. Is this a safe assumption? Is each and every pint of donated blood really tested for HIV and other blood-transmittable diseases? Do they really contact the donor if the blood is rejected because it tested positive for a blood-borne disease?

My best friend has AIDS and he's sexually active. He has unprotected sex with other men with HIV/AIDS. Should he use a condom instead or can does unprotected sex make no difference at all at this stage? Thank you.

I am 28 years old, and became sexually active two years ago. My husband is the only man I've ever had sex with, and I am his only sexual partner as well. Where does the gene or whatever it is that the HPV vaccine helps guard against come from? Because I'm too old to get the vaccine, are my chances of getting cervical cancer from this particular gene increased then? Thank you for your help.

1) What exactly is chlamydia? How is it transmitted? Can you get it through oral sex (man on woman)? How is it treated (especially in the case of males)?

2) Could you tell me about the symptoms of chlamydia and if one test is enough to detect that disease? Thank you.