Left rib cage pain symptoms and conditions

I had a slight cough for a while, but don't any more. I have been on 20mg for a couple years. About 6 months ago, both knees started hurting, but thought I was just getting old. (49). Then everything started aching. If I am moving, then I'm fine, but if I sit for any length of time and try to get up, I hurt all over. I don't know if it is this med, but reading all these posts make me think it could be. I just need to get my weight off and get off of this!
Also, I got to this site because I started having a sharp, fast pain just below my left ribcage. 2 yesterday, but about 10-15 today. Good thing it only lasts about a second, because it is bad. So-could this be from this drug, as well?