Knee Pain

[Mazza2016]

I recently tripped and cut both my knees - at first I thought that was it and thought the fact I found kneeling painful was due to the open wound. however I now find that when I kneel on my right knee I get a needle like pain - similar to the feeling of a plaster being ripped off my knee on right side. I can run, jump etc but kneeling is excruciating. Can anyone advise if this is temporary - that some rest might fix or could I have damaged something requiring further investigation. Part of my knee is also numb since fall and have throbbing sensation but no swelling.It is holding my training up at present so I need to get it sorted or some idea as to what might be wrong. i know no one can give a definitive but an indication would be good