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 the Tailbone Pain in Early Pregnancy (First Trimester) During pregnancy, the hormones relaxin and estrogen cause relaxation of the ligaments in the pelvic floor, which allows the coccyx to shift more than usually; this can cause pain. Pregnancy may worsen the tailbone pain caused by pre-existing conditions, such as: Constipation.