Had c section 13 weeks ago. healed ok. getting stomach pain, back & side pain on left and hip pain both sides. recovery? or should i be worried?

Pain s/p c section: 13 weeks after c section you should be pain free and back to normal. May be adhesions or a fluid collection or even abscess/ infection/retained product-endometriitis ( usually have fever). Consider an untrasound or CT to check for infection. Adhesion which no one can predict , are usually only seen at surgery because you actually have to look. Call you doctor or go to an ER