I have stump my doctors. I have bee n to 7 surgeons in a your month period to identify...a round hard nodule on the left side of my tailbone. It is not a cyst. It is not a broken tailbone. Hurts when I stand up from a sitting possition, when I lie down, when I try to sit up from a lying possition especially if I lean to the left and when my child knees me in the area while we are sleeping. I just want the pain to stop. I am scheduled for rectocele surgery but have put it off until this problem is resolved. I spoke to the surgeon for this area and she stated this was not due to the rectocele. The doctored feel the lump..nodule but does not know what it is therefore can not direct me to the appropriate doctor. Your expertise would be greatly appreciated.