birth control
"Got it 3.5 months ago. First 3 periods were 2 weeks long (which freaked me out) but this past one was pleasantly brief--just 4 days and way lighter generally. I was also really worried at first because the period pain seemed more intense at first than before the IUD (and that's the reason why I got it in the first place), but that too has subsided. They say to give it a few months and let your body get used it...that is true. I suspect by month #6 things will be even better."