Hello, I was wondering if there is any connection between some symptoms I have been experiencing lately. I am 17, five foot eight, and 190 pounds. Well, I have been noticably more tired and cold. I have also experience a difference in my hair. It has become more coarse, and a lot more falls out. Also just tonight, I got a nose bleed for no reason, and that has never happened before. Also the nose bleed went into my throat and I was spitting out blood. I'm scared... Thanks for the help.