I have right arm cast complete fracture radius and ulna cast for a month will it be okay to change the cast?

Follow Up Medicine: I believe that most, if not all of us here, would hesitate to give you this specific advice. The answer to this question should come from the physician managing your care where you live.

Update x-ray, Yes: Changing casts monthly is typically routine. Also typical is to obtain regular x-rays to chart the healing process. When in doubt, x-ray before cast removal.