How deep is the average vagina, and does it elongate when something's in it?

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?


Is there any way to make pap smears less painful?

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!