Nothing but blood symptoms and conditions

I started NuvaRing about 7 weeks ago. The first ring I used I had a really bad burning sensation a few days after I inserted it. I figured it was new and I just needed to wait it out. I couldn't even have sex because that made the burning five times worse. A week before I was supposed to start my period I experienced really bad abdominal cramping. Later that day I had an upset stomach. The next day I had to go to the ER because my stool was nothing but blood. They never found anything wrong and released me. I took the ring out as scheduled and had my period. The next week I inserted the new ring. A few days later the burning sensation came back. I am certain this is a side effect of the ring. I have no sex drive and I feel extremely depressed as well.