Hi, Thanks for your question on HCM I do understand your pain and discomforts As per your history you have already done stool examinations and found nothing so let me know few things whether you have abdominal cramps, gas and bloating?if yes then lactose intolerance can not be ignored.so you may follow like this- 1)take small amount of milk if you are taking more 2)if you take milk take it with other foods 3)Take lactase enzyme tablets before food may help 4)Buy lactose free products 5)Take a probiotics lactobacillus caps once a day and add Yogurt and Cheese in your diet 6)Take one multivitamin capsules regularly 7)Take lemon juice in warm water every day before your meal Hope that helps