What Causes Joint Pains And Burning Sensation While Urintating?

for the past three months I have had pains in my joints, particularly my feet, ankles, knees, hips, where my butt meets my lower back, in the middle of my upper back, my abdomen and my elbows. In addition I have also had problems with a burning sensation while urinating, but not on a regular basis. the joint pain is worse at night, when I wake up in the morning, and after I have been sitting for a while. What is it?