If you've had intercourse otherwise known as sex with a partner through penis through Vagina sex then you've lost your Virginity and are no longer a Virgin.
That's all it takes to lose your Virginity is to just have sex with another person and even getting fingered by a guy would mean that you've lost your Virginity as well.
You don't have to just have sex by penis to Vagina you can have sex with a finger and still lose your Virginity.