I'm 16 and I get my periods once every six months and they are usually super light and only last a few days. I started menstruating when I was 12 and it's been like this since. I'm 5' 2" and I weigh 112 lbs. I'm not that tiny so I don't know what's wrong with me. Am I infertile or something? All my friends say it's a blessing, but maybe I'm unable to have children. Please someone help me out here. Thank you.