What does it mean if you do not have your period every month and and i am a vrigin?

The only reason you wouldn't be a virgin would be if you had sex with someone. Some people say it has to be vaginal sex (as in a penis entering the vagina), and others say that oral sex would take away your virginity.

At the beginning, when you first get you're period, it's very likely that it won't follow the 28 day schedule. It usually doesn't start to become regulated until your mid-twenties or even thirties. Even then, you may not be regular - stress affects your period, as does health.