 [ Symptoms ] why has not my period come yet  i am 13 and i want to know why my period has not come yet i have all the signs pubic hair arm pit hair cramps nausea and discharge for 2 years i do not understand will someone please explain [ Disease ] it can be normal for a young woman even with all of the signs of puberty and sexual maturation not to have her first period until age 16 or so as far as a medical explanation for this there are many so unfortunately i have no way of offering you the specific reason or reasons why you have not started your period it is okay to see a women is health specialist but i suspect this medical provider would simply tell you to be patient for now or they may run a few diagnostic tests working in an adolescent medical facility for many years i can tell that not all 13 year old girls have experienced menarache the first period