Levonorgestrel
"I am 21 and I had my Mirena inserted in March of this year. I had heard a lot of scary stories and people telling me not to get it. I continued anyway and had it put it. I had it inserted 4 months after my daughter was born. I personally think that having the Mirena put in was worse than child birth. I cramped for a couple of days and then it didn't hurt anymore. My doctor told me that my period may completely go away but she said most likely it would just slow way down. The reason I don't like it is because the removal strings feel like fishing line and haven't softened like my doctor said they would. It hurts during sex. Plus I have NO sex drive whatsoever. I just don't like it."