birth control
"I found Nuvaring mostly unproblematic, convenient, and easy to use. (I did have mood swings that might be attributable to it, but it's hard to say, since there were other factors involved.) The main problem, however, was that I had frequent breakthrough bleeding: after 7 months use it was like I was having a very small period 20 days out of the month! Very annoying, to say the least. The doctor told me that meant the hormone dosage was too low for me and has proscribed Kariva for me instead, so we'll see how that goes."