birth control
"I was on Kariva for over 3 years and loved it.  Had no problems and a regular period.  However, I had to switch to Microgestin because Kariva isn't readily available in my state, I would have had to order out.  According to my doctor the closest birth control to Kariva was this one.  It really scares me.  I'm on my third pack and my periods have been significantly lighter, and that's awesome.  BUT they weren't nearly as regular as they used to be AND this is the second time I've experienced bleeding in between periods while on this birth control.  Stressful indeed! I'm not so sure how long I want to stay on Microgestin, not a fan of the in-between bleeding."