I'd wait until you get back. Why torture yourself...think of it as one last party before the real work begins.

My friend was told the same thing right before we went to France. She decided to wait until after and eat as many pastries as possible. Anyway, she ended up covered in a rash for the last half of the trip. So my advice would be if you are going to wait, at least eat normally in Chicago and don't over do it!

I am assuming you are trying the diet because you are having issues. As someone who is GF, I would personally not want to risk the digestive hell of the pizza...

I'd wait and just enjoy my Chicago pizza while I could.

Wait until you get back, but you could try to cut back that week.

Just saw a new PCP who recommended I try a dairy free/gluten free diet for 21 days. I am willing to do it but I am going "home' next weekend for the first time in over a year. This is going to sound silly but I am a pizza fanatic, home is Chicago and I really miss my favorite places. The doctor said I could wait to start until I return from my trip. But should I start now to get used to it and then just cheat with pizza while I'm there or just wait? I realize that I will have to start the 21 days over once I return from my trip but is it worth getting used to it now for a week?