Random pinching feeling in low back
I went to my primary doc three weeks ago with what I thought, as he did, was a low back sprain. He prescribed muscle relaxers and pain pills. I have continued to work and do all the things I must, only now taking the pain pills every night. My question is...now I notice more of a pinching feeling that comes on out of blue. Sometimes I almost takes my breath away, but it aches/pinches a moment or two, and then it's gone. This happens sporadically but consistently, and it's got me worried. My low back is still very stiff, and I have to be careful when I bend. Do I need to go back to my doc to further investigate this, or just give it more time? By the way, I'm 43 years old female in good physical shape.
Any suggestions greatly appreciated!