Serpentine, also known as New Jade, derives its name from the Latin word serpentis meaning snake like referring to the resemblance these green stones have to snake skin. This stone was used by the Romans to protect them from sorcery and was believed to protect against parasites, snakebite, venom and poison.
Sharp, stabbing pain near coccyx during period. Patient : I'm a fourteen year old girl, my periods are normal, and I don't have any medical problems. My period started yesterday, and almost exactly when my period started, a sharp, almost stabbing pain began near my coccyx area. It's like in the middle of my tailbone.
Causes of coccydynia (tailbone pain) You get coccydynia when your coccyx, or the surrounding tissue, is damaged. This causes pain and discomfort at the base of your spine, particularly when sitting down. The coccyx can be damaged in various ways, although in many cases it's not possible to identify a cause. Childbirth.