9th day post-op tummy tuck; sharp pain? (Photo)

Yesterday (8th day post op) i went shopping for 2 hours, and 40 min slow walk. My feet and legs got very hot at the end of the walk. Later that night i felt sharp pointed pain on the far right side at the belly button level. It comes back if i sneeze or cough and stays for 2-3 minutes or longer. It goes away if i push on my skin in that area. What could it be and could it be caused by walking and standing for too long. My doc said no physical activity for 8 weeks, but walking is allowed.

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