Rather pathetic, isn't it?
Always, always trust your inner voice with regards to Celiac because the GI doc population will try and keep you sick. There are a few great docs out there who get it but the VAST majority behave much in the manner yours did. I was patted on the head and told to go and "talk to someone" because there was nothing wrong with my stomach and my problems must be from anxiety and stress. You know, the crap they always do to women. I had pain so bad after eating, it felt like I was trying to digest broken glass, I was always underweight to the point many thought I had an eating disorder, I had just about every single symptom associated with full blown Celiac yet I was OK? I admit, this was a long time ago when I began to look for answers but come on!
Stay strictly gluten-free and forget what this turkey said to you. I don't even use a GI at all and now rarely see a doctor because I am healthy. I was eventually diagnosed but I figured it out and requested testing as I was down to 96 pounds by then.....
Welcome to our world and be thankful you have something YOU can control and not these knuckleheads!