Just Wondering If I Have Celiac Disease Because I Have

Just wondering if I have Celiac Disease because I have had diarria for about 2 months and a lot of gas. I am also having a hard time to get to sleep and to stay a sleep. My stomach has become very extended even though I really do not eat that much, and I have wanting coffee but I really have not liked coffee at all most of my life. My Dr has done a cat scan and nothing is showing up. I also have sharp pains on the right side of my intestal trat but it is speratic at times Do you have any sugestions what this could be Celiac?