Levonorgestrel
"I chose this option after being on pills for over five years and a trial of Nuvaring for two months. I always forgot to take my pills and was getting too paranoid. Tried out the ring which was a horrible two months of mood swings and discomfort. Went in for the Mirena and had it inserted when the Dr discovered my uterus is too small for the Mirena. So I went back a week later and had the smaller version Skyla inserted. If pain is the only reason you haven't gotten an IUD, stop worrying! My nose piercing hurt worse than both insertions of Mirena and Skyla. Take 800mg ibuprofen before appt. and have a heating pad on hand. All I felt were cramps that were similar to usual menstrual cramps, nothing painful."