Ok my friend is 19 going on 20 in feb. She goes for months without a period she has went a year before, and when she does have a period it goes for like 9 days she says and few times out of the months she doesn't have her period she spots... She is not sexually active and is a virgin she is sooo embrassed to go see a female doctor I tell her to go and get it checked out that can be dangerous but she is very embrassed does anyone know what this could be?