I was wondering about the depth of the vagina. I've read statistics that say that the average vagina is only 3 to 4 inches deep. This seems way too small to me, since the average penis is considerably longer than that. Wouldn't that mean that most penises would crash into the cervix repeatedly during intercourse? Since this obviously doesn't happen, my question is this: does the vagina actually elongate during intercourse to accommodate the entire length of the average penis?

Dear Alice, 

I take Valtrex daily to protect me from cold sores I get on my face. I haven’t had one since I started taking it a few years ago. My partner gets cold sores on his mouth and has recently performed oral sex on me while having a cold sore. Will the daily Valtrex protect me from developing genital herpes? How will this affect me in the future?

I would like to know what you've heard about pierced clitori. I've been told that the clitoris is one of the fastest parts of the body to heal after it is pierced, and that piercing it heightens sexual pleasure. Is there any truth to these rumors?

What are the risks of HIV infection for the passive partner of oral sex?

If one has a long-term partner and neither AIDS nor any other STD is a concern, is there any medical reason not to perform cunnilingus on a menstruating woman? My significant other is particularly horny during her period and would love cunnilingus at this time. I am willing but curious.

I am curious about double penetration (two penises in one vagina). Because of the increased friction, even if both men are wearing condoms, is there more of a risk that the condoms would break?

I currently use NuvaRing for contraception. Because the ring slowly emits hormones into the body via the vagina, my partner and I are wondering whether he will have an unhealthy amount of contact with these hormones during oral sex. Thanks.

I am a well-adjusted late twenties male with a steady girlfriend. Lately, I have been increasingly fantasizing about various types of anal penetration. I have discovered that during masturbation, this brings me very intense pain/pleasure. Even though I think it may be satisfying to experiment with a vibrator or other objects inserted by my girlfriend, I find myself drawn toward trying the real thing (i.e., having anal sex with a penis). The problem is, I definitely do not consider myself homosexual and, in fact, the thought of the actual act with another man actually repulses me. Am I trying to have the real thing without going through a bisexual experiment or what?

I am a lesbian who does not enjoy penetration and does not include this in my sexual repertoire. I am concerned, however, about Pap smears. I find the speculum very uncomfortable, even painful — my last Pap was agonizing and embarrassing. If I didn't know how important this annual exam was, I would just stop going.

I am seeking ways to make this experience less traumatic, so my question to you is, is there a way I can obtain a speculum of my own so I can practice at home? Any other advice on the subject of less painful Paps would be appreciated!

Thanks!

I'm wondering if washing immediately and throughly after intercourse helps prevent pregnancy.

My boyfriend recently told me that he rarely has orgasms when he ejaculates. I was aware that men could have orgasms without ejaculation, but I didn't think it worked the other way around. Are men more complicated than I thought?

Okay, a question has been asked amongst my friends, and no one seems to know the answer: What is the physiological purpose of the hymen?

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?

Some of the girls at my school talk about how their boyfriends got to first, second, or third base with them. I feel kind of left out because I don't know exactly what they are. Could you tell me what the bases are for girls and guys? I'd really appreciate it.

I'm a thirty-something man who has a happy but often stressful life. I'd like to get a massage every now and then, but I'm worried about what might happen when I'm virtually naked and being rubbed all over by another person. In other words, I'm worried about getting an erection during a massage. It seems like there would be no way to hide it.

How do I deal with this? How do masseuses deal with this when it happens? Do they expect their male clients to get aroused? Would they think I'm perverted when I'm lying on the table and standing at attention?

Just wondering if Vaseline is an okay form of lubrication... I notice that the container says, "for external use only," but I am wondering if this includes vaginas! Thanks. You're hilarious.

I am just curious about sex, and why is it such a turn on?? Is it the physical contact or sexual actions?? Or is it endorphins spreading through the body while it is happening??

I believe I have a mild case of phimosis. When my penis is not erect, I can retract my foreskin all the way back to reveal the glans. However, when I have a full erection, it is impossible to retract the foreskin to that extent. I can only retract it to reveal the slit and top part of the penis. Due to this problem, I have a question about condom use. I'm still a virgin, so I have never experienced intercourse using a condom. When I read the instructions on how to use a condom, they almost always instruct you to retract the foreskin completely if you are not circumcised. Since I cannot retract the foreskin while erect, is it still possible to use a condom without retracting the foreskin, and will this complication affect slippage of the condom or sensation problems during intercourse? On a side note, why is it recommended to retract the foreskin fully before putting on the condom? Thank you in advance.