Oh emma - time to get back on the wagon! As for LC while on the flu - I find when I have the flu I just don't eat except for chicken soup (which can be very low carb).

As for getting sick when i cheat - I usually get bloated and feel sick to my stomach. but i've never gotten the flu from cheating! But remember, each time you change the way you eat - your body has to adjust - so that could be it!