birth control
"I am 19 yrs old and have been on the ring for a year! I absolutely love it. It's easy to use and insert, you dont feel it AT ALL (I sometimes have to check if its still there out of irrational paranoia... it always is). (You can have the ring out for up to 3 hrs). I have had few side effects- my breasts grew slightly and the first few months on the ring gave me crazy amounts of discharge, but it lessened greatly after 3 months. 
I was worried to take oral birth control because I was completely regular and healthy and didn't want to mess that up. But NuvaRing didn't!"