Hi. I'm 13 years old. I'm 5' 4" and 124lbs. I got my first period right before I turned 12. My period was consistant for a while, then I did not get it for about 6 months and now I get it every three to four months. I have read a lot about this but for other people. Im not really a worrier and I can't say I hate getting my period only 3 or 4 times a year, but I'm just curious why I don't get my period every month like most women. if anyone has any explanation for why, please tell me. Thanks!!!