I'm 15 years old and I have been having symptoms over the past six months. Sometimes when I eat or am in class my chest hurts like someone is grabbing my heart. I am constantly tired and for the past week every day I have been falling asleep after school for at least five hours. I'm always tired even after I sleep and I sometimes get this shift in my eyes like they move side to side. I also get shooting pains up my legs, knees and arms. Sometimes I get a pulse in my neck head, or body that feels like I'm gonna faint. I've been very slow and exhausted lately with my movements and words.