PMR and Hip, Back Pain

I’m new to this group but not new to PMR. I was diagnosed
May 2020. The past few years have been challenging, to say
the least. Recently my shoulder pain was off the charts, so my
Dr agreed to reboot my prednisone dosage. I went from 5mg daily
up to 20mg daily. Reducing 2.5mg every week. I’m now back down
to 5mg. My shoulder activity has reduced significantly. I barely notice
it anymore. What’s happening now is my lower back and hips are hurting. At first I thought my back was out. I was having trouble walking, and standing up straight. The pain moved from one hip to the
other. Then both hips. It’s not a constant pain like the shoulders, it’s more like very painful muscle spasms.
I’ve seen my primary physician, and had a trip to the ER last week, thinking this was a pulled back issue. Was given muscle relaxers that
did nothing. Now I’m wondering if this new development could be
PMR.
Has anyone had PMR in their hips or lower back? What’s it like?