You are a Diabetic patient On insulin.
Recently diagnosed with renal calculus.
You are complaining of pain around the anterior chest(Rib).
This may be a referred pain
from the renal calculi
This may be musculoskeletal pain
may be a possibility.
Rest and NSAID's may help.
Chest pain of this long duration can to be due to any cardiac cause.
But Diabetics are always at risk.
ECG and ECHO may be advised if pain does not subside with the above mentioned measures.