Levonorgestrel
"I'm 21 years old. I have a 7 month old baby boy. It's been 3 months now since the insertion (painful but worth it). 3 weeks bleeding spotting. Totally satisfied. No weight gain, I'm petite though, increase sex drive! Insurance covered. No cramps, no bleeding. Just white and yellow discharge only occasionally. No acne. No need to worry about taking pills everyday. My husband loves it. He can feel the string just a  bit but no big deal."