I am 16 years old. can my period cycle change at my age. this month i have gotten my period its two days late. i haven't had sex but been grided on?

Menses vary: Depending on when you started having your period, it can be very variable. This usually settles down by two years later, but then many things can disturb your period - extreme weight loss, chronic illness, or just plain stress. In fact, worrying about your period can make your period late! How to worry less: Avoid behaviors which concern getting pregnant. Use contraception if need to.