My (R) Knee is hurting. When I lay down if I bend it. Sharp pains go down my leg. I don't remember hurting it. I take asthma meds. What can I do.?

See ortho. This has nothing to do with your asthma medication. Have you fallen back and braced yourself with your arms lately? If so, this could be from a Baker's cyst. On the other hand, knee pain can be caused by many other things including other forms of injuries. If the problem persists for more than a few days or worsens , you need to see an ortho. Has NSAID helped?