I was sick with a bad cold, possibly sinus infection, that started a few days before Christmas. I took a Z-pac from Jan 1-5th. Now I've had pain in my sides, inside my rib cage for over a week and the past 2 nights I can't sleep on either one of my sides because of it. When I turn over in bed, I get sharp pains in the side that is on top. I have no temp but when I breathe in all the way, I feel some slight pressure in both of my sides. I feel the best when I'm in a recliner with my feet up and back reclined or standing. I also moved some heavy furniture this past weekend and am wondering if this could be muscle pain. It hurts in my sides when I have to carry a heavy bag. If I carry a bag with my left arm, it hurts on my left side.