i have been fine all day but now i feel down a bit why?

i just feel like i wanna cry and i feel tired and sad and my ankles,neck,wrists,toes,fingers are clicking loads today and its starting to make my fingers and ankles ache. They click loads all the time but now there begin to ache when it happens my mate hates clicking but we had a english assessment and my neck and shoulders really hurt soo i moved my neck side to side and rolled it back it clicked loud my mate heard it i felt sorry for her but i really feel really irritated. I have anxiety

Please help?