I fell backward off a step on to concrete in the driveway I have pain in my low back at the top of my buttocks both sides and center but not as low as the coccyx. Could something be more serious than just bruised ? No pain down my legs no pain sitting or standing But going up and down stairs is very painful I have been using a freezer pack on and off for 12 hours. the pain makes me nauseous and sweaty Should I seek medical attention? I am 62 year old female , 185 lbs. on coumadin and Benicar. Tylenol when needed