Anybody ever heard of getting a migrane from gluten and coconut oil ONLY at night?   If I consume gluten or coconut oil, even in the morning,  I will get a migrane. But not until half way thru the night. I don't get this. Why at night? Why not right after I eat?

Early on,  DQ2 and DQ8 were the primary genes that have been connected to the potential to develop celiac genes but more recent genetic research suggests there may be more.

What markers /genes are these DNA test? 

After I get the endoscopy done, I’ll try to be in gluten-free diet even if I test negative for celiac disease or NCGS to avoid any complications. It does suck because I love wheat breads and Indian breads like rotis and naans, lol. I guess I have to jump to gluten-free options for those. Again, thanks for all your help.

@Jack Common, You could do a DNA test to see if you have any of the known genes for Celiac Disease.  If you don't have any genes for celiac disease, look to another source for your health problems.  If you do have celiac disease genes and have improvement on the gluten free diet, you probably have active Celiac.  Further testing would be beneficial. Keep in mind that different gluten containing breads have different amounts of gluten.  Think thick chewy pizza crust and artisan breads, and whole wheat breads for the gluten challenge.  Cookies and pastries do not contain as much gluten.   Since your blood tests were inconclusive, continuing with the gluten challenge may be needed to provoke a stronger autoimmune reaction sufficient for antibodies to get into the blood stream.