Hello, ever since loosing 5 stone in weight due to little eating I began fainting, i didn't think anything of it and now about 7 months on from loosing weight have begun getting frequent big painful bruises on my legs, blue lines appearing on my legs, pain, join pain, fever at night, headaces, dizziness and my veins in my feet and hands/wrists have began to show up all the time very bad spreading onto my hand as if bruised, aswell as that i get frequent sharp pains going up my veins and i had a little gum bleeding. I am 15, what could this be?