I've cracked my wrists many times, but now i have this pain whenever i turn my hand or wrist, is this a bad thing?

Cracked=Fracture?: Do you mean you have fractured your wrist many times? Any joint involved in the Fx, is more prone to develop Arthritis . So Joint movement may cause pain. Try to apply Ice, take Advil or Aleve (naproxen) like medicine to help with Inflammation and Pain. Do not do weight bearing exercise but continue to use your hand and wrist joint.