Cymbalta and tumor

I am a 49 year old female I took Cymbalta for 3 days and on the 4th morning I woke up with severe blurred vision and roaring in my ears that was April 26,2008. My ears are still ringing. I clenched my teeth so hard in my sleep I traumatized one of my upper molars which resulted in a root canal and crown. I have been to a ENT to have my ears checked, he said I had minimal hearing loss and gave me lipo flavonoid to take for the ringing. I just went to a neurologist today who is requesting an MRI on my brain to rule out a tumor. I don't know if this is a coincidence or not ,I know the clenching caused the damage to my tooth. The neurologist said ringing in the ears is not a side effect of Cymbalta. My life has been a nightmare since I took it.