Levonorgestrel
"I wanted this to work so bad! I've always been sensitive to Hormonal birth control so I had the copper IUD for 2 years but it moved it out place and cause me constant yeast infections. So after having that removed I tried the Kyleena hoping it being a low does option I'd have no migraine issues. Well needless to say I'm having it removed after just 3 days. Have had a constant migraine since 12hrs after it was inserted and am so nauseous. I'm told this isn't a very common reaction but can happen if you get migraines easily, which I do. Oh well - no BC for me!"