You are having intense pain in coccyx
area, it means you had a fall or jerk while trying to sit down, it might be a fracture
in coccyx by which you feel increasing pain during movement ,for this you need complete rest for at least six weeks and sit on centrally hollow seat every time that is you must always sit on scooter's inflated tube and do not sit bared coccyx, than you will be relieved by your coccyx pain and simultaneously take some strong analgesics with anti inflammatory drugs along with complete rest for minimum 6 weeks.Further you take guidance by expert orthopedic surgeon nearby you. Hope you will have relief by this my guidance. Good luck and take care.