The coccyx, or tailbone, is actually the "tail end" of the spinal column. It is comprised of five primary coccycal vertebrae fused into one. If the coccyx has been traumatized due to bruising or fracture, it can be very sensitive - especially in a seated position.
The coccyx represents fundamental needs. If you suffer from pain in this region, you lack confidence in the Universal Intelligence and its ability to help you with your fundamental needs. You want to be taken care of but don't want to admit that to others or to yourself. If you feel pain in the tailbone while in a sitting position, it is likely you feel guilty about sitting around, waiting for someone else to take charge of your life. You feign independence by appearing active.
It may be that you feel guilty for parking yourself near others who are busy, or for sitting idly as you have fun (at the movies, taking a class, etc.). Because you have a dependent mindset, you assume others are depending on you as well.
First, get in touch with your thoughts and acknowledge the fact that you want someone else to take care of you because you have no confidence in your own abilities or in the guidance of the Universe. Is there something wrong in admitting it? It's OK to need someone's support. Don't judge yourself so harshly. This does not mean that you will be dependent forever. Perhaps the Universe has given you this person to lean on for a while until you regain your strength and confidence. Denial of your dependence will only increase it. Allow yourself to be dependent in the moment, for it's only temporary. Such self-love will help you develop more autonomy.
Secondly, check with your loved ones before deciding that others depend on you and that you can't have fun without their consent. See if that's true. In the process, you will allow everyone involved to express their own needs and desires.