Left rib fracture after a fall,month later this horrible squeezing sharp pain in same area,could barley move without excruciating pain,called to get help, hospital gave me muscle relaxer and that helped. 2 months later i can feel it coming back. why?

It sounds like you are having a muscle spasm of the muscle in between the ribs. This was likely triggered by the same injury that caused the rib fracture. A rib fracture can take months to heal because the chest wall is constantly moving with breathing. So, because it takes so long for the rib to heal, the surrounding muscles can spasm. Avoiding strenuous activity will help.See doctor if continues