running may damage your knee

I do exercise every day from Monday to Friday . I usually run for three kilometers one day But I feel ache on my right knee today. I am thinking about running may damage knee if I continue to run. Who can advise me what I should do next ?

I exercise daily from Monday to Friday.  Usually, I will run a distance of three kilometres each day.  However, today, I feel pain in my right knee.  I think that any further running may cause damage.

Who can advise me on my next course of action?

Running May Damage Your Knee <- Just one knee or both knees? 

I do exercise almost every day, from Monday to Friday. (You want to use 'almost,' because everyday means Sunday and Saturday too.)

I usually run for three kilometers one per day. But, Today I feel an ache on in my right knee. I am thinking about that if I continue to run, running I may damage my knee. Who can advise me on what I should do next?