ParaGard
"I started ParaGard about three months after giving birth to my second child.  I had it removed 14 months later.  Pros: 1) I didn't have to remember to take it.  2) Didn't change my mood or weight 3) Comforting that there weren't any unnecessary hormones in my body 4) It was effective in preventing pregnancy.  Cons: 1) My periods lasted for THREE weeks on average (sometimes a little less, sometimes a little more).  -I was told it will get back to normal, give it a few months -After it didn't, they refused to believe it was the IUD because it was copper/nonhormonal.  2) less sex with my husband because of the heaviness and length of my periods.
 -------- I had it removed and my periods were almost instantly back to normal (3-5 days)."