birth control
"It was incredibly convenient and I don't regret having it for all of 3 years but I will be removing it ASAP. I had the insertion in 2012. There was minimal discomfort during the insertion. Note that I pride myself with having a high tolerance for pain. 
Initially, the first few months I experienced new pms symptoms like lower back pain and heavy bleeding as expected. Then periods normalized, were heavier, but nothing I wasn't warned about. Then I had 3 great years of worry free sex.
Most recently, my cramps have been intense enough to require medication. Now my husband reminds me that I said I would take it out last month, every month. I will be removing it. Other symptoms: hair loss & weight gain, though I can't be sure of the cause."