I am having troubles with my menstrual cycles. I first got my period when i was eleven. Things were weird my cycle was off then it was fine up until i was like 14 and a half. My cycles were being weird and some months it would show up and other months it won't and sometimes it would skip like 3 or 4 months, and it would come. I have never had sex, but i do masturbate occasionally. i turned 15 November 2012. My cycle was okay for like 5 months, then april 2013 it dint come and i turned 16 nov 2013, and i still haven't gotten my period. Like sometimes it would be like thick brown discharge, like at the end of a period, or when your first starting to get your period, but my period just is not coming. I don't know what to do, like i am over weight for my age, i don't do much activity, mostly just focusing on school and stuff. it didnt show up for 4 months i was like oh its just happening again but like now it been a long time and i dont know what to do. I am for suere not pregnant. And i dont like going to see the doctors, so am freaking out, and i just need some help. thanks