I was on the ring for 5 years with no problems. Toward the end I...

I was on the ring for 5 years with no problems. Toward the end I was having major mood swings; I would get angry or upset very easily. I also would experience occasional stomach discomfort, but not 100% sure that it was as a result of using the ring. It has been 10 months since I stopped using the ring. About two weeks after I quit using the ring I started having periods that would last anywhere from 14-20 days, and stop for 5-10 days. I've had blood tests and an ultra sound just a couple of months ago which came out negative. I've also tried Provera to help regulate my cycle, but that hasn't had much of an effect. I'm still experiencing extremely long periods (averaging 14-16 days long), and short lengths of time (averaging 7-10 days) of not having a period. I wish I never would have taken the NuvaRing.