Ok, so my 7 year old has been worryin me lately. He is constantly complaining about his knee joints hurting him...I feel like he is never going to gain wieght (he is a stick) and it seems like every other time I turn around something else is going on with him. The other day he came to me to show me a red bump that is on the head of his penis...he was complaining to me today that it was hurting. Back in October I took him to the dr. because he had these bruises on his legs that would not go away (they were there for weeks) well they checked his blood and they said everything looked good with that. Im scared that something serious is going on with him...I have been doing researh on cancer and yes he does have a few symptoms of leukemia (which scares the hell out of me) im sure he is fine I just want to know what is going on wit him. If the red bump on his penis starts to look worse in the next day or so I will be taking him back to the dr. Can somebody please tell me why he would be having knee pain and all the ohter stuff that is going on with him...I really am worried and the drs. are not worried, so I really do not know what to do!