No worries man...when in a contest diet deflating yourself is planned and when you carb up and get to eat food again your body sucks it up quick!
A forced fast such as this might be a good thing if you want to stay optimistic. Although an intestinal virus doesn't sound like the way to do it lol
Once you eat again you'll fill back out.
I've started my 'bulk' diet and have been sick the last 3 days barely making maintenance cals...so don't feel too bad.
YOUR NOT ALONE! lol
get well soon man and back in the game.