Levonorgestrel
"After having my first child, I decided to try a long-term method of birth control. I was open to the IUD but very scared about the insertion. I went to planned parenthood and loved their customer service. They gave me pain medicine before insertion which I was VERY happy about! I felt only a little pressure when the nurse inserted it and no pain at all afterwards. It has now been almost 5 months since the insertion and I have yet to get a period. Do not know what to expect but am so far very pleased with my decision! Would definitely recommend!
STOP reading reviews! I did and I got super scared and almost didn't go through with it. Every body is different but recommend you carry pain meds w you if worried about pain during procedure"