First, I'd like to thank you for this service! It's been so informative to read the advice you've given others. I'm a female grad student and have just gotten into a relationship for the first time. I have a few questions regarding oral sex: my boyfriend loves to suck my nipples and I feel great when he's doing it, but after a while, my nipples start to feel tender and actually hurt sometimes... is this normal? He's not rough when he's doing it, so I'm not sure why this happens.

Also, when my boyfriend "goes down" on me, I worry about what he thinks of my smell and taste. He says he likes it, but I can't be sure... is there some way of finding out if my scent is normal? Can he pass any infections (to my vagina) from his saliva? (He has had only 1 one-night stand affair and he used a condom that time).

Also, I masturbate him (I stroke his penis) until he "comes," but I'm afraid of tasting his "come." He hasn't asked me to, but I think he would like it if I did... how can I overcome this inhibition? Are there any risks for me? I appreciate any help/advice... Thanks a lot!

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 was just wondering about the difference in effectiveness between "ultra sensitive" and regular condoms. I imagine there is a greater chance of breakage with thin condoms, right? Sorry if this is a silly question, but for some reason, I thought I heard that there wasn't a significant difference.

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?

I have encountered a problem I never expected; my boyfriend is quite simply very large. I am unable to perform oral sex except for the first couple of inches due to the girth, and vaginal sex is not totally satisfying for him because he is too long and cannot fully penetrate without causing me significant pain. I've seen my doctor, and am reassured that there is physically nothing wrong with me — no infections or scarring, but am finding it difficult to come up with a solution. Any suggestions?

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?