Hi I have knee pain and been for a xray knee cap swollen and feels like fluid on the back of knee and foot feels a bit fluid in it and knee makes crunching noise I have been using pain killers and inflammatory and a novasonic masarger twice a day had pain on and off for few months but now more painful to walk have to put leg up to rest but I can sleep OK and doing the garden is a killer after a few hours can you advise