You got a lot of good advice, so I won't repeat any of it.
One question, though. Do you have a lot of fat in your diet? I'm like you, and stay think pretty much no matter what. I'm also dairy free. When I'm breastfeeding, especially those first few months, I crave fatty things and I figured it was to supply fat to my milk. I would literally eat spoonfuls of coconut oil each day. And I'd use a LOT of olive oilin my cooking.
Getting your supply up (if your body will let you) will require almost around the clock nursing. (iI've kept track, and my all time record was 9.5 hours with a baby latched on to me in a 24 hour period... Intense stuff... But they seem to be worth it )
I don't get the "it is to specialized" line, on the total IgA testing. Makes.no.sense. at.all.
Agreed. There is no logic to that. Ttg IgA and aga IgA tests aren't specialized, but total IgA is? That's a BS line if I've ever heard one. Just how is one supposed to get referred to a GI if they have negative IgA results because they're IgA deficient but no one knows it?
I think you should ask yourself this, and answer honestly: if you did not have a celiac diagnosis, would you go to the rehearsal dinner? (another approach to this question is: if the restaurant they chose was gluten-free friendly, would you go to the rehearsal dinner?)
If the answer is yes, then you should go. Bring your own food, or eat before.
The wedding is not about you, it's about you brother and his wife to be. Trust me, we've all been there. 4 years into this, I would love to be invited out even to simple things like lunches with coworkers. But they think it's rude to invite me to a restaurant I can't eat at; I think it's rude that they don't invite me at all. It's not an easy thing to deal with when social functions tend to revolve around food, but you don't need to eat to be social.