Originally Posted by intheforest
The hymen is a thin membrane that covers the vaginal opening, so it isn't inside the vagina at all. I guess it would be hard to see it, or to know what shape yours is in. The hymen usually is torn or broken in childhood by normal activities, and this is why menstral blood is able to come out--if it was completely intact by the time puberty hits, you wouldn't be able to get your period!
I'm sorry but I'm going to have to disagree on a few things here. They hymen can be seen visually, if you know what you are looking for. An intact hymen does NOT completely cover the vagina and women with intact hymens have no problems menstruating. There is almost always an opening into the vagina, right from birth, just a very small one, it is extremely rare when there isn't. And the hymen is NOT "usually torn or broken in childhood by normal activities". Most 'normal' childhood activities do not involve contact with the hymen. They hymen is usually stretched or torn through direct contact with something, be it fingers, tampons, sex toys, gyno exam speculums, and ummm, penises... it is not common for regular exercise or physical activity to have any effect on it. It would have to be pretty strenuous activity for that to happen...