What Need To Do For Sharp Pain And Numb Feeling In Kneecap?

Hi. While on my knees, playing with my children last week, I moved a certain way and felt a very sharp pain in my kneecap. It was extremely tender afterwards for approximately one week. Although I had full range of motion without pain, any slight pressure on my kneecap, even the touch of my clothing was painful. The tenderness has gradually subsided but last night I noticed a large, dark blue bruise behind my knee and today my kneecap felt numb, tingly. and slightly stiff. It does not appear swollen. I am wondering if I need to see someone tomorrow or if taking it easy for a few days should do the trick? Thank you.