Thank you for your question. The symptoms you describe are suggestive of a difficulty breaking down the food you ingest into its basic components and then transporting those across your gut membrane into your blood stream. This could be due to IBS but there are a host of other conditions that may result in a similar clinical condition. Research "Leaky Gut Syndrome" for one of the more prevalent conditions in today's modern society.
With regards to treatment I would firstly suggest a proper consultation. Because of the various processes involved in the breakdown and absorption of your food there are several possible causes, each with a unique approach to management and treatment. As a general approach eliminating wheat and dairy are a step in the right direction. The addition of supplemental digestive enzymes may also be of use, as would the use of additional HCL. I would recommend a digestive acid tolerance test and then take it from there.
Please don't hesitate to contact us at healthnation.co.za for further information. Your digestive system is a key role player in your body and it is no surprise that you feel exhausted and anxious. If you aren't getting the appropriate nutritional building blocks for vibrant health then your body is unable to maintain a healthy balance.
Many thanks and warm regards