If you want more detail about what to eat, look at dietdoctor.com which is the website of a Swedish doctor who uses low carb diets with his patients. On the website, under "Topics" you'll find "LCHF for beginners".
Got my results from the Doc, I have to go and see a gstroenterologist for further testing, but she did say I wasn't a coeliac, maybe suffering with IBS but also there is a slight problem with my liver function test
The Gastroenterologist should find the cause of your discomfort, make a list of the foods that upset your stomach and what symptoms you suffer from and take this along to your appointment, it all helps with their investigations and final diagnosis.