Compulsively cracking my joints... Could this be OCD?

It started around 2 years ago, when my severe depression started and has progressively gotten worse. I can crack just about every joint that is crackable in my body (jaw, neck, back, elbows, wrists, fingers and each little joint in each finger, hips, knees, ankles, and toes), my back is what is the worst though. I try to crack it constantly, and the thing is, it'll only crack so much. You would think after it cracks, I would stop, but no. I keep trying to crack it. Sometimes the compulsions are worse than other times. Yesterday and today have been very bad. My math tutor asked me if I was okay yesterday because I kept bending my back in various ways to try to crack it. I have pulled muscles because I do it so forcefully and so much. it is also so embarrassing because people notice it and ask me about it. In the timespan that it's taken me to write this, I have probably tried to crack my back over 50 times by contorting my it in different ways. Can someone please help me? Please, if you know anything or anything to help stop this.

I know this sounds stupid, but I feel as though I am trapped in my own body. I hate this.