birth control
"I've been on Kariva for about 2 months now, and just started my third pack a couple of days ago.  I'm very happy with this BCP, though it's the first one i've ever tried. Usually I get pretty bad cramps, especially on the second day of my period.  However, I've noticed that for the past couple months I only got mild cramps on the first day, and none on the second. Looks like I won't have to buy painkillers anymore! 

My periods have been lasting 3-4 days and before it used to be definitely 4+.  I haven't experienced any noticeable weight gain.

I do get the occasional moodswings but other factors contribute to them as well."