I used NuvaRing for almost four years and loved it. When I first ...

I used NuvaRing for almost four years and loved it. When I first started using the ring I did go through a period where I felt "crazy." I was extremely emotional. However, that feeling subsided and I had no problems after that time. Unlike other pills I have taken, I did not feel it made me gain weight, and I never had any unusual or painful periods. My only complaint is that I stopped using the ring a few days ago and have had stomach pain ever since. I am not one to get cramps with my period, so I'm not sure what this is. The pain actually started just as my period was ending. I wonder whether it has to do with the ring?