What is the correct figure for blood pressure? Mine is 140/90 and my doctor keeps checking it every time I see him. He says it is alright, but this constant checking worries me.

:fighting2

If it were me, I'd be more worried if they dinna check your BP. A change in BP can indicate other issues.

I check mine twice a week, on a slow week. I've done so for a few years now. I don't bug the doctor about it, it's just something I do.

my numbers have been in your range, but are generally lower than that, notwithstanding being a large fella who enjoys his food with a passion.

Here is some BP info from WebMD

http://www.webmd.com/hypertension-high-blood-pressure/guide/blood-pressure-causes