re: Advice on PRP et al for SI joints

First one happened about 11 or 12 years ago I slipped on black ice and landed on my lower back/hip. Hurt horribly and almost made me pass out. I thought I had broken my hip but x ray was negative, eventually just got better, this past year I was deadlifting and reinjured it. Felt like a horrible muscle spasm. This time felt almost exact same kind of pain as my slip but resulted in some nerve pain that had doctor thinking herniated disc, I only recently visited a doctor who specified it’s SI because the pain and tightness is on the right side of my hip rather than down my spine. Lots of mobility work and stretching helps it.