For past one week, I have pain on my both the knees just above the knee cap and slight pain under the small vertical bone below my knee. This pain occurs when sitting and when the pain starts, entire thigh and calve muscles are paining. I could also feel some tingling sensation when I press knee. But there is no pain when I touch or press also there is no bulging or tenderness. I also don't feel the pain when standing or walking or climbing the stairs but pain occur only when sitting.