Hello, I really want some help. I'm 16 years old and haven't had sex yet. And yet my period hasn't come this month. It usually comes around the 17-21, so I'm really concerned as to why it hasn't happened this month. So I'm scared, is it bad that this hasn't happened yet?

If you haven't had sex there's no reason to be worried. Your cycle regularity depends on your hormones, women are constantly changing there hormones over anything... stress etc. don't be scared! There's nothing to worry about

Mine changes (date wise) a lot I would just mark down when it comes and goes but if you aren't having sex prob nothing to worry about

Many women are not always regular, give or take a week or two even. Also some women miss a month or more. So with that said, always talk with your mom, she can give you all sort of experience insight