I had and have the same problem. I had endoscopy and colonoskopy, nothing there. Because l had also pain in my hearth area l also had my hearth tested. Coroner CT normal. My lipid tests high. I have been using drugs for hypothyroidism after radioactive iodine treatment but they are stable. I am tired of not finding any reason for that and being accused of it to be physiological. I am nearly sure that it is not the case because symptoms can occur anytime like when l am having fun with my children or watching beautiful rain in nature.