Not in your DDC, just saw this on New Posts...
Actually, IUDs are pretty darned effective. Everything has some degree of failure, save abstinence.
I have a Mirena IUD. It is the one w/ the hormones, but they are pretty low. I can't handle any of the other hormonal b/c forms, like pills (even low-dose) or shots, rings, etc. But I had no problem w/ this one. The hormones in Mirena frequently never get much past the uterus & ovaries into the bloodstream. They tend to stay pretty local, since they're in such tiny doses. However, I was not bfing anymore when I got it (dd is 9), and even though I'm pretty sensitive to the hormones and never felt anything, I'd still check with a LC or two before getting it.
I love my IUD. I like not having anything to remember or deal with on a daily basis. And, because I have Mirena, I barely get any period at all (it's about halved the length and strength of my bleeding, though only barely touched my PMS!) I think I remember hearing that the non-hormonal IUD has the opposite effect, though.
I also believe the studies that say that fertility returns pretty much immediately after the IUD is removed.
The only thing that hung me up about it for a while, was the idea of putting a foreign object in my uterus. Eventually, though, when I looked at the real risks, not just my fears, the benefits outweighed the risks, for me.
I suggest talking to your partner, midwife/OB, LC if you can find one (or better, two), and if you're religious, pray/meditate on it. That's how I decided (minus the LC).
Good luck and HTH.