I had SPD with each of my pg's and at times i couldn't move, last time i saw a chiro and wore a pelvic support belt and it improved so much that i hardly had any pain towards the end.

For me i could feel clunking when rolling over in bed, couldn't lift one leg off the ground so found that when getting dressed sitting on the edge of the bed was a must even when it wasn't painful so definately make a habit of that one.. Keep your knees together when rolling over in bed or sitting in a chair and sleep with a pillow between your knees. Also when walking make sure your toes aren't pointing outward keep your feet pointing straight ahead when on the ground.

It can be extremely painful so try and see a physio or chiropractor to get it checked out.

Good luck xoxox