Rather than worry about the high blood pressure issue, get a BP kit and check your BP.

As the saying goes, If you don't like the dark, light a candle.

Choose to do the things that can answer questions rather than worry about the answer being bad. More often than not, the answer is much better than expected.

My wife has white coat syndrome. Her BP increases at the doctors office (white coats) for no reason. She also will spike her BP from stress so we try to minimize stress.

Take your worries and make them into choices. i.e.

I'm worried about my BP. My choice is to get a BP kit and check my BP.

I'm worried about having sex and my BP. My choice is to check my BP before and after to see if it changes.

Usually, sex increases hormones that stabilize BP in a positive way.
Check out Number 4 at :
1 Surprising Health Benefits of Sex