I does seem related to the fall. I would suggest a Chest X-ray to rule out any fractures
in the ribs or other problems.Meanwhile you can take muscle relaxants and pain killers sold under the brand names Norflex
, Mephenamin, Disipal, Banflex, Flexon
, Biorphen, Brocasipal, Dolan, Norgesic
, OrfenAce and Neuberol Forte.