Birth Control
"I have been on Nuvaring for over a year. Overall I love it. I have done 3 weeks in 1 week out and I have done 3 weeks in and immediately put in a new ring which both have worked without any problem. I also tried 4 weeks in 1 week out/immediately put a new one in because my gyno did tell me the ring actually has 28 days of hormones - but the lowered hormones caused me to bleed a lot.
I do have problems with slipping occasionally and taking it out before sex is a little embarrassing but I love it for how hard it is to mess up."