A simple first step could be Kombucha tea. It can be made, or bought in raw form. It is very helpful with digestion. Visit the tea forum for more details on making it. You can sip on it during the day and see how it affects you before you jump into anything complicated again. You can also start your own batch with a bottle of it bought from the store to save you time and money. I'd suggest trying a bottle of it from the store first to see how it affects you before making your own. I use GT's Raw Kombucha, and while it has only been a few days, I feel immensely better.