birth control
"Worked the way it should at first, then I had my period every day for months. The doctor told me to "keep waiting" so I dealt with that for so long before I went to a different doctor to get it taken out. It was effective, but I was bleeding every day for 6 months and they didn't want me to take it out. I no longer go to that doctor. Also it cost 600 dollars and I was told my insurance would cover it, it did not. Terrible, frustrating experience. Left 2 dark scars as well."