Yikes, that's no fun either. Sometimes those need surgery. Hopefully yours calms down. I've had that sciatica nerve pain before, I hated that. I sat on a tennis ball when in the car, stuck it under the hurting cheek. It did help.[/QUOte
i have a "donut" that helps cushions the tailbone that helps with the pinching, also have one in the house in chair in front of the computer here and defuniak springs