Hi, I recently went to the doctors and my mirena string could not my found. He used his finger could not find it, he like used the inserted and his finger still no sign, after that he used the light to look inside and was still unable to find it. I have been having unprotected sex with my husband thinking everything was okay. I am now experiencing cramping, shooting pain up my private, chronic lower back pain. light brown discharge. I also have headaches. Worse then usual. I am unsure what is going on. The doctor is sending me for an ultrasound.. but its a week away. My mind is in a thousand places.