I have been having itching and burning the week after I put the n...

I have been having itching and burning the week after I put the new ring in. I have no idea why and I've gone to the doctor several times about this and they find nothing. They just prescribe me cream and send me off. Each time it gets worse. At the moment I'm not even sexually active, so there is no way it could be and STD or anything like that. Also I've gained a ton of weight since I've been on it, don't feel like going out anymore, I'm always tired and I'm extremely depressed. However, when I don't use it, I'm moody and fly off the handle, basically having withdrawls from it. Any suggestions on what to switch to?