No. It *might* set you back a little, but the good thing about this stuff is nothing is undone that can't be done up again. Unless your problems are really severe it's unlikely that you'll react to a little bit of folic acid and cyanocobalamin.
If you want to put a happy spin on it

you can maybe consider it an opportunity to see if you react to folic acid, and how it differs with how you've been feeling while on the protocol.
But honestly, you'll be okay. Even if you have symptoms, as long as you don't take in any more folic acid you'll be fine. Just maybe be more careful reading labels.
