Not sure.

But I bet a cardiologist would know a LOT about BP.

Quest, maybe you have "white coat" hypertension. A lot of people get nervous going to the doctor, and that can cause a rise in bp.

Some tips to get a more accurate reading:
Avoid caffeine 2-3 hours before taking bp.
Cut way way down on salt and processed foods. Since processed foods contain way too much salt, especially canned soups.
Exercise regularly,at least 30 mins a day, preferably more.

Try taking Apple cider vinegar(ACV) 2-3 times a day. The raw organic apple cider vinegar like Braggs, Spectrum or other brands. Not the type you cook with.

The best meds to take if you really have to take them to lower bp is a diuretic alone. That usually does the trick and despite what a lot of doctors will tell you, you do not need another med with it. The other med causes way too many problems with the side effects, and you find you are always sleeping. I hate that side effect.