Please help me understand why candizyme makes me nauseous now.

I have been using candizyme for my candida overgrowth for about 2 months. I have had great results from it and felt cleared up but while I was on vacation I totally ignored my diet and have gotten out of hand on my Sugar and carb intake.I have begun to notice the past several nights after I take my candizyme I have begun to feel nauseous.
Last night I woke up with mild stomach pain that has lasted all day today. What could this be? I am trying to understand what is going on. The candizyme has never made me feel this way before and is the only thing that has helped my candida so I do;t want to stop taking it but don't understand why now all of a sudden I am getting these symptoms after cheating on my diet.