Is my heart rate within the normal range for my age?

I am a 62 year old female and in the morning my heart rate is about 95- 100 ( when resting).As soon as I get up and shower,do other simple tasks ( like washing up!) my heart goes up to about 130-140,which seems a bit high to me.As the day goes on my heart rate comes down to about 92 sometimes lower. Three months ago I had a virus which left me fatigued for weeks,although I have been walking regularly for weeks too.Could this elevated heart rate be caused by an overactive nervous system?