If you stress about it, it will just delay more so its probably nothing
Same here and I'm stressing out! I'm barely 13 but I've had my period for over a year. PLEASE HELP BY GIVING ME HINTS AND TIPS A.S.A.P!
It could be many things: Pregnancy, stress, diet changes, hormones.
If its your 1-3 year it's normal for it to be irregular I'm waiting for mine to come too :P
You may be pregnant or if you are old enough going through menopause. Well if you are in your teens it is normal for it to not come.