@charlie3 I wish I had proper scientific citations for you, but I seem to recall reading from a reliable source that, despite its extremely low caloric content, monk fruit sweetener produces out-sized insulin spikes in many people. I may be mis-remembering though, so someone with more science in hand should please set the record straight.
FWIW, I performed a blood glucose test on myself with a super-sweet dose of pure Stevia and shared the results here: Stevia post
Then again, we’re all unique… so your own metabolism is what matters to you, not mine.
Perhaps you can see whether you have a different reaction to Stevia, and compare it to your reaction to monk fruit sweetener?