Rice bran oil has no carbs and does not feed candida. If you suspect you have bowel issues such as ibs then go easy with fats like coconut oil and just try small amounts of all oils to see how you get on. My son has most of your symptoms except for neck problems and was diagnosed with ibs. You may like to look up Dr Leo Galland who has his own website. These are only suggestions for you to consider, only you can take on board what people suggest and only you know what your real symptoms are and what suggestions if any you have a feeling may be worth looking into further. I really hope you find the answer your looking for as you have been through a lot and everyone deserves good health.