I've noticed an uncomfortable pinching near my tailbone lately, on both sides. It's not painful, but is enough for me to take notice. And it stays in the butt region, so it's not shooting into my back or legs. Is this my sciatic nerve, more than likely? Is there something to help keep this from becoming a painful nuisance, ie chiropractic care? I'm very active and haven't noticed it while working out, but it's been popping up lately.