Newer Copper T IUDs pose less of a problem. For some women using Progesterone T, bleeding may disappear altogether. An early IUD, the Dalkon Shield, which sported a braided tail, was banned after reports of several deaths and a very high rate of infection. The risk for infection is highest during insertion, when the IUD is pushed into the normally sterile uterus. After insertion, the risk drops significantly.
Expulsion is most likely to occur during the first three months after insertion.
In one out of five cases, the user fails to notice that the device is gone, and thus faces the risk of unintended pregnancy. The risk is highest during menstruation, so users are strongly advised to examine their sanitary napkins for the IUD every day during the period and to regularly check for the IUD strings throughout the month. Effects on Pregnancy. And previous use of the Copper T also poses no future risk. The Progesterone T IUD, however, increases the risk for ectopic pregnancies, which is still very low.