I had to deal with something like that too. When my mom and I first thought I was a celiac, my dad didn't believe us. I believe he thought we were crazy, even though I had all the symtoms, (Rash, stomach pains, mouth blisters, leg cramps) and 1-2 weeks after eating nothing with Gluten, I felt better. It's annoying when people put a damper on your mood, or don't believe you, I know. But they don't understand, nobody said people were always nice. But they are your family, and remember, blood is thicker than water. You just have to try to forgive them, even though it's hard. I can still remember when my dad didn't believe me, Neither did my brother. If we went to the store, and even though I couldn't eat them, he'd buy doughnuts.... Try to forgive him, it is hard, but he's not always going to be around.... Stephanie P.S. The cookie crumb thing... That is just, insensitive, pig headed, and rude. If someone did that to me, they'd find that plate the cookie crumbs were on.... In a very uncomfortable place.