It could be die-off, but your symptoms don’t sound too strong. Typically you’ll get it once adding in probiotics or antifungals. A general timeline is mentioned within the protocol, so if you follow that, then you should be good to go. I believe it said to add either antifungals or probiotics during week 2.
If you have allergies, you likely have leaky gut which is caused by candida.
A lot of people get die-off with just the diet only after day 1, so it can happen very rapidly.
I would examine whether your diet is strict enough. Corn, rice and beef are not items we eat on the diet (I’d save rice for phase 2 personally). Rice occasionally is OK, but eating it everyday it could set back your recovery.
We have a strict forum food list that most of the forum user’s follow. If you are interested in seeing this list, email able900 for a link.