Elderly Pains?

I've realized I seem to be on better terms with my parents lately. I don't know, I guess we talk more, mostly about school, but it's an improvement from not talking. Except I feel like I'm really cold towards some of my friends, depending a lot on my mood and what we're talking about I guess.
And geez, my hands, arms, and neck are killing me. So when I write or type, it's like the bones of my hand ache. I can't hold them straight either, like if I want to put my hand on the table, my palms hurt, and sometimes my wrist. When I rotate my arm sometimes, I swear, it's like a creaking door, as if the bones were rubbing against each other (my knee does that, too, but it doesn't hurt at least). Not to mention, when it's cold or something, my upper arm has some sort of stinging sensation, but it doesn't even seem to go away when I wear a jacket. My neck is probably the worst. It may be from bending over my desk all the time, but if I try to lean my head all the way back, the muscles on the back of my neck hurt, but if I try to bend my head too far to any direction, it hurts, and I'm usually too tired to keep my head up, which is a more comfortable position. Hopefully I won't get sick, because then my muscles will probably cramp, and depending on which one wants to spazz on me this year, it'll just make my aches worse. I really wish I knew what's the deal about my muscle cramps. I visited a bunch of doctors about it, but apparently none of them can find anything wrong with me besides that I have influenza. Of course, the cramps go away soon after my cold passes, but I'd like to know what's wrong with me, you know? Apparently, I used to cry all the time as a baby because of some muscle cramp, too, and my parents had to tie me up in my blanket. I'm not too sure if that's true, because they brushed it off by saying, "Nah, it's just probably because you liked crying." I don't even know.