i don't know the details of your case (not all fractures are the same) to be able to determine if pain is appropriate four weeks after casting but my guess would be no. it is not normal. you need to see your orthopedist again for a re-evaluation. sometimes improperly placed casts can cause painful pressure areas or your fracture may have shifted.
it's been 4 weeks now that i broke my wrist i am in a cast. is it normal that i am still having so much pain? . pain on top of hand and shooting up my arm on the thumb side. plus my arm feels very warm.