Its a inflammation in one of the soft tissue layer in foot, its called plantar fascitis.
Next Steps
Use MCR slippers, while walking.
Use soft sole inside shoes.
Do hot water fomentation for foot.
Tab Acelara p 1-0-1 x 5 days
Tab Pan 40mg 1-0-0 x 5 days(before food)
Tab Tendocare 1-0-0 x 30 days.
It’ll take sometime for it to reduce. Do regular walking to keep you body weight in healthy limits.