What are your chances of having a healthy baby on Mirena?

You shouldn't get pregnant. Mirena is 99.99% effective against pregnancy. If you do, it's 90% of the time going to be ectopic, which must be removed before it bursts your fallopian tubes. If it isn't ectopic, it would still need to be removed b/c the uterine walls would be too thin to support a fetus. So, I believe you can safely say 0%. S