your concern is 15 weeks post C section pain between shoulder blades radiate to ribs. more likely nerve
compression in dorsal spine left sided. Investigations are required to see the cause of compression . is it there or not . pl see for your serum calcium chemistry to see for calcium deficiency
muscle spasms. Go for X rays , MRI and investigations
consult a orthopedic doctor .
In the mean while take tab brufen
for just releif
this is a brief answer with out examination and investigation
dr niraj garg