Hi there.
The numbers you quote for your BP are very good.
On the basis that there are no other medical issues,
there should be nothing to worry about in them.
Low BP is usually under 100 over 60, but its dependent on symptoms after that. A lot of people have no symptoms when the bp is a little low.
Most doctors would just love the numbers you have !
Maybe if you consume a little extra water it may rise a little. Also watch when standing up that you dont stand too quickly, as you could possibly get a little dizzy.