The copper T IUD is a method of contraception that lasts up to ten years after insertion. Women who use the Copper T may experience side effects. These side effects can include: • Heavy menstrual bleeding • If heavy menstrual bleeding occurs    regularly, anemia is possible • Menstrual cramps • Changes in menstrual cycle • Women who are not in monogamous relationships may be more susceptible to infection. • Nausea • Vomiting.