I have heard of many of the AD meds causing weight gain. I know I have gained on Cymbalta even thow my pdoc says it is not listed as one of the side effects. I did to have my thryroid checked and that was normal.
It is a tough battle, I am sorry you have this added to your anxiety. I think the above advice is excellent too and yes I am a big soda drinker and only drink water at work.................bad habit I know.
Hugs sweetie. Stay with us.