My son 4.7 years age suddenly fell  on the  floor on Sunday , slightly in pain , then yesterday pain decreased , but swollen was there, going for x-ray , shows lower humerus fracture, doctor said need pluster ,will done on Thursday for now gave arm sling with crepe bandages and Macalvit syrup,  he is okk now but the swelling is there ,but will be it late for wait for 3days for pluster?? X-ray report attached .Kindly reply.