I haven't even been on NuvaRing for a whole month, but I have noticed several side effects. First I had severe lower back pain, similar to the pain I had during my first pregnancy. I have also been depressed, and tonight when I should have been enjoying sex with my husband, I discovered just how much my sex drive had diminished. I was so dry, and that never happens! I am taking NuvaRing out for good in three days. Thanks to all who have posted here. I am now certain that my problems are related to the NuvaRing.