Fractured pieces of the Paragard which are left behind in the uterus may embed in the uterine wall, perforate the uterus, or travel to other organs, such as the Fallopian tubes. This can create an increased risk of various women's health problems, including: Acute and chronic abdominal pain, unusual vaginal discharge, heavy bleeding during menstrual cycles, vaginal bleeding between periods, PID (pelvic inflammatory disease), pelvic infection, infertility, and/or ectopic pregnancy, miscarriage, or premature birth if the woman then becomes pregnant