My son has always had weird things going on with him since he was younger. Unexplained things. Like his neck...he can make it pop and crack just but jutting his chin forward and he had pain in it too. The dr's had him going to get mri's but he could never stay still long enough and when they sent us to have him sedated for one we didn't have the same insurance and they woudln't cover it. Anyhow- then his back started hurting and then his hip. They aren't constant and they come and go. He isn't fat but he is on the upper percentile in weight and he has never been very coordinated. Yesterday he started crying and said that his left arm hurt really bad. not his elbow but mid-arm. I asked if he fell or bumped it and he said no. This morning he woke up and was crying that his right shoulder was hurting and didn't want to lift his arms up. Basically I helped him get dressed for school. I sent him with a note telling the teacher that if he is in too much pain to let him see the nurse. And I sent the nurse a note telling her what was going on. I just don't know what to do. His pediatrician is not the type to really dig for answers so I am wondering if I should just go to the ER? or should I chalk it up to being growing pains? He really is in pain...weird pain. He can't describe it other than it is inside the bone. He is a very smart and loving boy and other than being the youngest and feeling a bit left out at times he isn't the type to cry wolf. Then I had a nightmare last night that my son had cancer and then they couldn't help him because I waited too long...so now I am freaking out. What do you guys think it could be? What should I do?