high pulse rate

I'm 43 yrs, female.  Normal BP is around 110/76. Pulse rate on wake up condition is 80-82.  After a while of cleaning houseworks, pulse rate reached 100.  RAte also increased at the end of the day's work reaching 86-90.  I've done ECG and given reading of 84.  When pulse rate is high, I tend to feel damn tired and uncomfortable heartbeats.  I tried to go for treadmill exercise but afraid if this is not a good sign to exercise.  Please advise what kind of tests should I acquired or if this is a symptom of any kind of heart disease.

[grendslori]

I would start looking at another cause for your tiredness. A woman's normal pulse rate is 82, a man's is 72. To have a pulse rate up around 100 after doing housework etc. is completely normal. As I said, if you are tired, I would look into another cause. Maybe you are anemic or are not sleeping well and aren't aware of it?