A virgin is someone who's never had sex. People define “sex” and “losing your virginity” in different ways. Don't feel pressured, wait until you are ready.
Everyone's “first time” is different. But one of the most important parts of being prepared for sex is making sure you use birth control and condoms to help prevent.
Virginity is a social construct, but that doesn't mean you shouldn't prepare for your first time having sex.