I’ve had a bad PF flare up recently and I’ve been getting sporadic back pain as well.

I’ve had a bad PF flare up recently and I’ve been getting sporadic back pain as well. I’ll be walking and feel a sharp stabbing pain in my lower right back. Around the same time I noticed some pain beneath my knee. This is all on the right side of my body. Has anyone else experienced something similar? Last time this happened my PT said it is likely SI joint related. He did work on me and we did some strengthening workouts but it’