Hi FFBT,
First of all well done for coming clean, you didnt have to.
That shows that you are dealing with that little problem straight away.
Once you had swallowed the cake it became history and life goes on,forget it.
You have done no damage to your dieting, you will not have put any fat back on your body.
Worst case is that you may be storing some glycogen, only a small amount, but for every gram of glycogen stored there is 3 gram of fluid hanging on to it.
As you now stay back with the diet theres every possibility your glycogen store will have emptied and therefore the fluid will once again have gone by Mondays weigh in.
So there you have it, problem gone lol.
If it makes you feel any better, I have been the same today, Im usually very strong but for some strange reason Ive found the day very hard.
Like you I have now completed 6 days and am looking forward to knocking on my own door on Monday for a WI and consultation. lol.
Best wishes to our great team on this our first week.