Can Ovarian Cyst Cause Pain In Lower Left Back?

I have been experiencing pain in my lower left back for a few months now. I was diagnosed with an ovarian cyst three months ago and thought my pain was associated with the cyst. However, I went to the ER last night and an ultrasound showed the cyst was gone. I am still in a great deal of pain and can feel a soft rather larger bulge under the skin where it hurts. I exercise daily could this be some sort of injury or something else?