MRKH

MRKH is a medical condition in which a girl is born with no uterus, cervix or vagina. It is not obvious due to a dimple where the opening should be so most of these girls do not find out about the condition till they fail to have periods or try to have sex. The young lady at the link did not find out she had it till she was 17. She was embarrassed at first but later decided to share with others on Facebook. MRKH has a one in 5000 occurrence in Great Britain.