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.

I have talked to my doctor, to my local Planned Parenthood, and to the local health department. I have gotten the same story from all of them, that unless there are symptoms or a reason, one shouldn't have STD lab work done (or that there wasn't a 'routine' inclusive screen). It wasn't until recently that I discovered that a lot of STDs are asymptomatic. Are there 'routine' tests that should be performed for each of us (besides my normal annual)? If so, where can one go for this kind of testing and what should be tested for?

1) While I found a lot of info on oral sex and AIDS on this blissfully honest site, there didn't seem to be any info on "fingering" (not sure of the technical term?) a woman. I'm in a high risk AIDS country and recently "used my fingers" for a couple of minutes to delight a local woman who has turned out to be having her period. After noticing a considerable amount of bloody discharge, we stopped. But do I have a considerable AIDS risk? There were no cuts on the fingers I used but a small, possibly healed, cut on the thumb of the same hand. Break it down for me. I'm a bit on edge.

2) Can you contract HIV from anal fingering your partner if you had cuts/scratches on your fingers?