@Animebabygirl the hymen is a patch of skin thats like in the front of your (you know what). it basically means viginity because if its still there, you havent been penetrated. also, the hymen rips when you get penetrated so there's blood.
**btw, im a virgin but i listened in health class.
also, not all girls have one because if you have ever fallen and landed oddly, been horse back riding or used tampons, youve probably broken the hymen.
sorry if its nasty, how old are you actually?