Bodily aches and cracking bones!!!?

umm first off i'm feeling pain all over on my elbows i can crack them repedeately, and my shoulders crack and sometimes my hands feel pain inside of em then i can crack my wrists. What is going on? i'm only 22 I feel bodily aches i can crack my lower back and i'm constantly going through bone issues in my body sometimes when i'm at the movies I get soo iritated and sometimes i just wanna cry cause the ache hurts my knee caps get irritated sitting down so i have to stretch. I repeat all the time cracking my bones and people tell me they don't have the same problem hit me?