I started feeling a right knee pain 3 months ago and that was cured with some medication and next month I started getting pain in my left knee as well and in shoulder both sides. Shoulder pain little better with some days of treatment but it is not completely cured. The pain improved when I lift weight or do any activity. Now the pain only in left knee and shoulder, right knee is completely alright. All blood test Anti ccp, RA factor,
Uric acid,
CrP and xray MRI came out normal. Why this mild pain lasts and how does it takes to go?