As a coeliac diagnosed at 36, I'd urge you to get tested - as TFA documents, coeliac disease's symptoms can present in other conditions too, and CD is a risk factor for other conditions like schizophrenia.
I do miss pizza, beer & bread. And I really miss just being able to order anything from a menu when I'm out with friends. But having to avoid gluten has opened up a tonne of new foods to me, and I've gotten pretty good at cooking (by necessity!) too.