I'm a psych nurse, so not up on the baby stuff. However, a few months ago I lost a bunch of weight and found that it hurt to sit down, like my coccyx was jutting out (bear with me---i'm getting somewhere with this)...
Went to the doc, who told me that I perhaps have extra coccyx bones and that..(here's the good part)...some babies are born with a tiny tail like appendage because of such extra coccygeal bones.
Was he pulling my leg??? Was I born with a tail????
AAAHHHHH!!!!!!!!!!!!!!