As you have learned, all medications and have side effects and interact with one another. I think you and your doc need to do a risk benefit assessment, and possibly find an alternative. In the meantime do not stop abruptly unless instructed.

As for the diatomaceous earth, every link touting its use is by someone promoting or marketing it. The conclusion by medical professionals is that it is interesting but not yet proven. I personally would not eat dirt unless prescribed by a doc who knows me and can show clear scientific proof for doing it. Maybe you can find a true scientific study to participate in., one done by a university or teaching hospital.
Have you talked to the doctor yet?