How to know what is best remedy for sore tailbone-probably from bad sitting posture?

Modified Cushion: When I have patients present with coccydynia or tail bone pain, I have them buy a piece of foam and cut a hole in it where there tail bone typically resides. This helps relieve pressure and pain. Strengthening pelvic floor muscles can also be helpful. A physical medicine doctor who specializes in pelvic floor treatment may be helpful.