Hi Claire, I'm wondering how to sort this too. On Easter Sunday we had friends over and I ate a richer meal than I'm now used to, but not really too over the top. I fasted on Monday but by Monday evening I felt really nauseous which continued on till late the next day when I felt pretty much ok.( I ate about 700 cals that day of very plain food.)
I have decided not to fast today( Thursday) as it is my daughter's birthday tomorrow and want to feel well for it.
I'll go back to my Monday/Thurs routine next week.
I wondered if it was unrelated to fasting or maybe too many carbs in the system then fasting. I think next time I have a mini blow out I'll fast 2 days later rather than the next day- see what happens. It's all trial and error for each individual I think.
Overall I'm so happy with this WOE though so I'll keep trialling what suits me!