I had the same experience. I was about the same age when I felt bad a lot. I had developed food allergies and suffered from nausea after I've eaten something al

I had the same experience. I was about the same age when I felt bad a lot. I had developed food allergies and suffered from nausea after I've eaten something along with a slight chest pain. It was going on for weeks before I went to my doctor and got diagnosed with a single gallstone and a lot of slug right away. In those weeks before, I was terrified that it could something more serious. But I told myself, that it was just the stress of the current project and the traveling (each week). After the diagnose, I went to the hospital three times when it was really worse, but denied further actions because of my project. The last time I went was on the last day of my project. I was in a really bad shape. I was operated a month later and today I am fine. What I learned: See a doctor ASAP and do not delay treatment, even when working on one of the best projects.