Is it normal to have green vaginal discharge if i'm a virgin, no sexual activities at all?

Possibilities: The vagina is lined by cells that are kept moist by simple body secretions, These secretions have sugar,protein & moisture, which will feed many types of germs if the find it. The close proximity of your anus makes chance contamination by germs normally in your poop common. I wouldn't consider it uncommon & you likely need to contact your doc for guidance.