Thanks for writing to health care magic.
I feel you should consult your doctor once again. There could be a fracture
or dislocation if there is such severe pain
. Bruising is bleeding beneath the skin. Some times a large hematoma
may prevent movement of the limb. A child may not move limb because of pain some times.
Continue to ask further queries as required.
Hope this helps.
Dr Y V Siva Sankara Murty
Associate Professor of Pediatrics