birth control
"Worst experience. Insertion took way too long and was SO painful. My doctor had to cauterize me with silver nitrate to stop the bleeding. I was nauseous and dizzy for half an hour after.  They did an ultrasound to be sure it was in place, it was. After a week with horrible cramping and bleeding I went back in for a recheck. Another ultrasound showed it had rotated and was lodged in my uterus. Removed and will NEVER have this IUD again. If I could give zero stars I would."