Welcome to HW.
Doesn't hurt to try gluten free, even temporarily. You also might want to try dairy free at the same time.
I suggest you get on some proper treatment though, if not humira, there are other meds for CD. Ask your GI about
imuran.
Please don't rely on a poll here to diagnose you for Crohn's. If you don't trust your doc, get a second opinion.
Good luck!