Silvers - I agree with Lisa here. I was a diet coke drinker for years - but not to the extent you are/were. I also drank coffee in the morning, then usually only one diet coke in the afternoon. Even that had a negative effect on me, though.

I do like carbonation so I switched to seltzer - even plain is good as far as I'm concerned. Also drink green tea - make my own iced and hot. It's wonderful - give it a try and good luck!