This is a common problem for me, but it is not daily. In the V, of the lower end of my rib cage, it feels like I have a mix of heartburn and as if I am full. Yet, at the same time as those feeling, if I am in hot areas, I get dizzy. The way it makes me feel, makes it hard to eat. When I do eat, knowing to keep myself hydrated and filled, I get a nasty cough afterward and if I am not careful. I will throw up my entire meal. My primary care doctor said i show no signs of having GERD, and that I may need to see if Gluten is the problem. Thats when I realized it is all foods. Fast food, whole foods, anything edible makes me feel like this from time to time. It happens 2-4 times a week, for the whole day or sometimes it goes away over time. With all this being said. I am bipolar and am not on any medications. Nor do I take anything for headaches even.