hi there, thankyou for using HCM if you do not have a history of trauma, I find your pain more like it is in your tailbone. you might have more than one problem as if you are having pain in buttock means you can have problem in your joint connecting hip and back. since only physical examination and x-ray can confirm the diagnosis. I would suggest you take an analgesic like ibuprofen and sit on an inflated tyre tube with your buttocs on the tube, so that your tailbone does not rest on ground for atleast 2 weeks. also put hot pack in tailbone , and you can massage some local ointment like dicloran gel. I hope this helps kind regards dr Fouzia