Try not to go on those "med vacations."

Here is a quote from a good article I just found:

Stopping psychiatric medications suddenly can cause a range of symptoms — from the dizziness and ringing ears associated with abruptly stopping certain antidepressants, to the actual withdrawal that you could experience from going off an anti-anxiety medication. If you suddenly stop taking lithium, one of the drugs most commonly prescribed to stabilize bipolar disorder moods, you can experience “rebound,” a worsening of your bipolar symptoms.

I also have a problem with overeating to the point of feeling disgusting. What has helped me was having support. A good place to look is the Overeating & Binge Eating forum. Pretty much everyone there will understand the food/general malaise feelings you have and can give you some good advice on how to conquer it.

Also, you have support here and you always will. I wish you the best of luck, my friend.