Im 16 and still haven't had my period but my mom and sister both had theirs at 16. I do competitive cheerleading everyday so I might be overworking myself but all the other girls my age on my team have theirs. I have had discharge for 3 years now and pretty much all the development for about 2 years. I'm 5'7 and over 110 pounds so I feel like I should have it. I have had a grow spurt like a year or two ago. And I'm just really scared I'm never going to get it.