I have been diagnosed with IBS, and recently I've noticed a flutter in the upper center of my chest, right where the top of my collar bone dips slightly in, maybe 3 inches below my adam's apple. No chest pain, and I don't feel a weird heartbeat. It used to happen frequently then stopped now it's happening again. I don't know what it is, any ideas? I have an appointment coming up with my doctor but I just don't want to wait too long if it is serious, Like I said it has happened then stopped, then happened again today, it comes and goes throughout the day, now tomorrow when I wake up it will most likely be gone, I notice it happens more then I drink alot more water than usual or eat chinese food more than usual.