I fell backwards off a countertop from a squat position and hit my lower back on the right side on a table ledge to break the fall. This was yesterday afternoon. Very sore today all the way up tog shoulders but mostly where I hit. CouldI fell backwards off a countertop from a squat position and hit my lower back on the right side on a table ledge to break the fall. This was yesterday afternoon. Very sore today all the way up to my shoulders but mostly where I hit. Could I have bruised a kidney? Feel kind of nauseated as well . I have bruised a kidney? Feel kind of nauseated as well . It was at school and I m told I have To wait until Monday because it s workman s comp. is it ok to wait to see A dr?