X-ray showed Fx coccyx19days ago, follow up with ortho said no fx joint bruised. Pain worse 2days ago &noticed large indent in lower back. Suggestions?

Rest + cushion seat. It is best to take anti-inflammatory medication (ibuprofen, naproxen) as directed and rest. If you're sitting you should use a 'donut' seat cushion to take the pressure off of the coccyx bones.
Patience. Fracture or bruise - an injury to the coccyx is painful and takes quite a while to heal up. Perhaps see a chiropractor.