I was so excited to start a birth control that was only once a mo...

I was so excited to start a birth control that was only once a month - until I started having side effects. I was on NuvaRing for a couple of months during which time I became an emotional basket case. I have a history of GAD and panic attacks, however I experienced extreme depression and anxiety like I have never felt before. I have lost 15 lbs in a month because I am so worked up I can't eat or sleep. I took out the ring and started taking an antidepressant. This was 2 weeks ago and I still don't feel that much better. I can't blame all of this on the NuvaRing for sure - but it is very coincidental that all this happened within a few weeks of starting the ring. Anyone know how long it takes to feel better?