What is hymen?
Hymen is a thin tissue (membrane) that partially covers the vaginal opening. The membrane has an opening in it to let out the menstrual blood. The size of the opening, and the elasticity and number of blood vessels in the hymen varies from person to person. The hymen may tear during vigorous exercise, gymnastics, horse riding, injury or sex. If the hymen opening is large and the hymen elastic, then sex may happen without tearing it. Therefore it is not always possible to ‘test’ for virginity by examining the hymen. It is not true that bleeding should happen during first sexual intercourse.