I have been on nuvaring since january 9th. So far I like it, I haven't noticed any symptoms from it and it is basically worry free.
The only issue I have had with it so far is that my first period has seemed to go on and on for weeks. When i'm not on bc my periods are normally like 10-12 days (which is one reason I take bc to regulate my periods)... Its only very light brown spotting, so its not like i've had continual flow. So, i'm guessing that it is just due to my normal cycle getting into the nuvaring cycle.
I'm scheduled to take the ring out on jan 30th for my 4th week. Hopefully my cycle will be more normal! :)