62 year old with history of high blood pressure is light headed and has a reading of 101/70?

101/70 is slightly on the low side (hypo-tension) average for 60 year olds.

. Min Avg Max
Systolic Blood Pressure. 121, 134, 147.
Diastolic Blood Pressure. 83, 87, 91.

This was taken from the www.Medindia website after Googling "blood pressure with age" and agrees with both medical advice & other web sites I've visited to find a good place for you to check in the future.

If you have not yet, always see your doctor for a check up, ( easy for me to say being in the UK with the NHS!).

Hope this is helpful.