Got pregnant with IUD once, what are the chances it will happen again? I'm 20 years old, I got pregnant with my second child while I had the 5 year iud. Luckly my doctor was able to remove my IUD and I had a healthy baby boy. My son is 2 months now and I

Low.. Low. An iud, when placed correctly is 99% effective against pregnancy. Follow your doctor's instructions about how to check placement of the iud, and get your annual pap smears regularly so your doctor can fully assess placement. If at anytime, you feel the iud is out of place, follow up right away with a visit to your doctor.