I've been on the Nuvaring faithfully for over a year. I use it correctly, 3 weeks in one week out. Refridgerate it until using and all of that. My periods are always here by the second day after removal and they are usually heavy. Today is Monday and my ring has been out since Thursday, I've had brown discharge every time I use the bathroom but no blood at all. This has never happened before and I'm concerned.