The blood pressure of EVERYBODY in a doctor's office raises.

It is even the same for animals on the exam table of the vet: Their heart accelerates a lot.

You can buy a small heart beat and blood pressure monitor for not much money. It will show you how your blood pressure fluctuates all the time throughout the day (this is why one single reading at the doctor's office does not help much but it's better than nothing). For example, blood pressure increases after a meal. It's a good tool to use many times a day for a while, just long enough to learn how our body reacts to stress and eating and exercising and to music you like and TV programs you like and the occasional glass of wine. After the learning, it's good to use it when needed if your blood pressure has a tendency to go too high: You will learn what to do to keep it at a good level. Otherwise, if your blood pressure is kinda normal most of the time, don't obsess about it.

The little Omron on the Amazon.com.uk link below costs only 25 pounds. I know at least 2 people who are using it, and they like it; it's not extremely precise though. More expensive (but still very affordable) models will be more precise if you need precision. Your pharmacist should be able to explain if you need a precise one or just an ordinary one like the little Omron.