I feel as if there is a palpitation in chest. It doesnot happen throughout the day but as if all of a sudden without any reason, couple of times and goes away. It might again happen few days later and only once or twice in a day. Many years back it happened, when I was giving my school going exams. Post that I visited a cardiologist and he did ecg, but didn't find any issue. Though I don't have any health problem as such, but I am overweight, and have seen that my pulse rate is also a bit elevated in 85-95.