Spleen: there are multiple incidental calcified splenic granuloma is what i found out when they did a ct. can this cause back pain on left side?

No,: this is usually an incidental finding and is a result of a prior granulomatous/inflammatory response. In the US this is typically due to a prior histoplasmosis infection, which is endemic in the Ohio, Mississippi , and Missouri river valleys and other regions of the US. It is likely of no clinical significance at this point, and not the reason for your pain.