I ve had lower back pain for nearly a year now, but it s never been so severe that it literally brings me to tears. Ever since I had my endometrial biopsy on 7/2/18, the pain has become so overwhelming that I find myself stopping several times throughout my workday to lie on the floor at my office. In addition, I ve been getting these very strange vibration feelings in my pelvic area (almost as if a cell phone was on vibrate inside me). It doesn t hurt, nor is it pleasant, just a very strange & annoying vibrating sensation that will last anywhere between 10-45 seconds. Is this normal?