According to me you must start with walking for 15-20 min daily. You can start with some basic exercises for lower limb like ankle toe movements,static quadriceps,static hamstring ,bridging exercises. The pain should relieve slowly and gradually .Then you can do graduated exercise program.
Deep breathing exercises like diaphragmatic breathing exercise.
Next Steps
Consult physiotherapist for follow up exercises.
Health Tips
Exercises with utmost care n precautions.