First, go back to work next Fall. Why rush it? If you're bloated or have a lot of gas, teaching might be tough to do right off the bat. This symptoms will get better.
As a 33 year old male who had a total pancreatomy last October, I pushed myself back to work....big mistake! What's the rush?
If you really care about your students, which I am sure you do...wait until the fall! You won't be able to do your best until then. Who wants to be bloated at the chalk board. Plus an urgent need to run to the can in is no fun for anyone, especially for a teacher.
As for enzymes, I take Pangestyme. I go through a bottle of 100 pills in about 2 and a half days. (No, I'm not pigging out, I really watch what I eat, it's just that the acid in my stomach kills the enzymes before they do their work, so I also take Nexium at night before I go to bed.)
Things will get better!
Just my two cents!