<<Disclaimer: Verify this information before applying it to your situation.>> To Bec. There has got to be something else bothering your system. I have arthirtis in my knees if I eat something wrong. This let me find out what all was bothering me when I finally got smart enough to listen. Try using distilled water for a while until you are sure it's something you are eating and not something you're drinking. When I drink water from our copper pipes it makes my knees hurt and I'm constipated for a day. I use the water before it goes into the pipes. I know this sounds crazy, but it repeats ever time and i've tested it several times. I'm not saying it's the water for you,but you want know until you eliminate a few things. Yes you can be regular and be celiac, and I feel very good now. I run about 2 miles 3 times a week. Dwight