Suggest Treatment For Pain In The Hip And Back

I bent over the bed to pik up a pen and got hit with severe pain in my right hip and back. i could not breathe ,move,walk or hardly breathe because of the pain. The doctor at the ER had no answers for me and the demeroland muscle relaxers did nothing to elevate the pain.It was days before I could move and my hip swelled up to an enormous hump. Could I have leukemia?