I'm fourteen and have a larger body form, I'm not clinically overweight but I say otherwise, my period is four days late but I'm getting cramps, headaches and feeling nauseous just like if I'm on my period, but there's no bleeding, I am a virgin so I know that I am not pregnant, I have heard that stress or depression can sometimes postpone a period and I have been stressed lately, if someone has experienced the same thing and knows why, please let me know, I am getting really concerned:(