It's been since January, just after I had a pneumonia, that I started feeling those weird and sudden heartbeat, about once a day or so. Now, I can sometime feel my heart losing its rythm, beating in chaos, not too fast nor too slow. Mow of the time, it happens when my heart starts to beat faster : Ex. Before an exam, during/after sports, etc. Most of the time, its after eating. Once, my heart started beating really fast, like a panic attack.
I am a 14 years old boy, a little overweight, not much exercise, altough these days I try to, ate a lot of fast food for the last 1-2 years, but I completely stopped since the beginning of this years. I drink a lot of tea every day, it kind of replaces water. I also like drinking diet cola (1-2 can a day, max). I think it because of stress or too much coffeine, but I am really not sure. Since I started going to school, I have always been really stressed ( I would consider much more than an average kid ), and I sleep really late (00-1am school and an excessive 2-4 am during weekends.)