Suggest Treatment For Hip And Back Pain

Hello,
I fell off a horse a few years back I have suffered with lower back pain and hip pain on my left side. An MRI revealed I had bulging discs in lower back. Could this be the cause of my hip pain. I have done an MRI of my hip which was clear. The pain is worse at night and is lessens with movement. Did physiotherapy for a while and it helped a little but as soon as I stopped it came back again. Any advice would be greatly appreciated. Thanks