Not to worry. I had a similar day last Thursay. I went crazy. I skipped breakfast and then had a photoshoot until 1. So I went to my favorite Irish place (mcD's) and ate the bun, fries and everything. Then I ate some ritz crackers and biscotti - and some boxed candy! I managed to pull it together a little for dinner and had the same thing as you. Up a little the next day and up 4 lbs the day after. I kept the faith and returned to primal and lost the additional weight PLUS 2 more lbs.
So I predict your body has totally changed and will you return back to your new fat burning normal panda self within another day or so.