Levonorgestrel
"Ok I had mine inserted six weeks after my daughter was born Nov 2012. When it was inserted it hurt like heck. I had some cramping and bleeding nothing bad tho. I loved it until Easter 2013 I had one breast swell it was a small cyst. And no period for six months well of course I didn't think it was my mirena. Then my period suddenly came back. I have suffered a miscarriage. I have been so moody, cramps awful cramps, low sex drive my poor husband, breast swelling and tenderness again, cysts on both ovaries, hair loss, depression. I'm getting this thing yanked as soon as possible. And going back on the pill. I hate it! Do not recommend for anyone!"