Celiac?

Nicole • 27 ❤️ Milwaukee born and raised 🐄🧀🍻

So I've been having some issues lately and my research has led me to look up the celiac website. I read through like all of their pages of information as well as did their little check list to take to my doctor. I checked off about 90% of the check list. I also made an appointment for next week to see if they think I should be tested. My question is how do they test you? And if I test positive how hard is it to change your diet? Not even like how accessible is the food but is there anything you really miss after going gluten free? Did anyone lose weight by going gluten free after finding out they have celiac? I just want to be prepared if it comes back negative. Any advice is welcome.