Hi, im a female teenager and i would like to know if its normal if my period is late? i'm 10 days late and i didn't have any sexual contact to someone

Yes: Depending how long it's been since you started having periods it is common to have irregularly spaced periods or even skip a month without there being a pregnancy or serious abnormality. If you are heavily exercising or malnourished it is also common to not have a period. See your doc to make sure that you are healthy and that this is normal for you.