I have nausea feelings often that come on quickly. They relieve with belching for a few minutes, then the feeling increases again. I have trouble going to the bathroom. I go around 3 times a week. I have palpitations sometimes, with very hard headaches (you can feel head pulsing in my temples). I have bloating, abdominal discomfort, gas, light headedness, etc. I am a mouth breather as I sleep with my mouth open. I am not overweight. I am 5 7 weigh 130 and am in good shape. I am nervous to what this condition is. I also have very very bad upper back and neck pain, and between shoulder blades that sometimes radiates down my arm. I don t know if that relates. Sometimes when I use the restroom it doesn t look like what has come out has been properly digested or broken down. Could you please advise?