I am going to have an IUD put in on Friday for the 2nd time. My first one is working its way out. I had a c-section, so when the Dr. put it in, it was very painful. My OB/GYN called in a prescription of valium for me to take before my appointment, but when I called my GP, the nurse said it was not safe to take... show more I am going to have an IUD put in on Friday for the 2nd time. My first one is working its way out. I had a c-section, so when the Dr. put it in, it was very painful. My OB/GYN called in a prescription of valium for me to take before my appointment, but when I called my GP, the nurse said it was not safe to take while breastfeeding.