Review of Universal Pizza

I had their GF pizza ( 1 piece) & 3 hours later started having nausea & upset stomach! Not sure if this is what’s causing ? I’m Celiac 3 1/2 years & don’t get sick just the rash ( dermatitis herpetiformis). I’ve broken out only slightly with contamination in the past but never felt this sick ! I had their gf pizza a year ago with no problems. If I break out in a day or two I’ll know for sure it was the pizza!