I've posted about hurting my back before so I'll try to keep this brief. Back story is that I fell down the stairs when pregnant and landed straight in my tailbone. Also had SPD during pregnancy. Have been in pain pretty much ever since (4 years).
Recently the coccyx pain got even worse and has now resulted in me also getting sciatica due to the muscles swelling. But the thing that is worrying me is that in the last couple of weeks when I sit down something in my coccyx seems to 'pop' and feels like it moves position. Does anyone know what this could be?