I am so confused. I just want to cry all the time but I can't. My friends and teachers at school all think I'm always happy and smart. A few months ago I have started to get pains in my knee and leg as well as sudden dizzy mess. The pain in my knee and leg has gone away but the dizziness has become more often and I get pressure behind my eyes and head. My chest has also been hurting but it comes and goes. My ribs and the left side of my hip has been hurting on and off. Could it be stress or anxiety?