Wow, I’m sorry that you’re going through this. Stress and anxiety will defiantly cause your blood pressure and heart rate to spike. When I was going through my health anxiety spiral, my blood pressure/heart rate would stay high. You might also want to start eating a healthier diet, and see if that also helps to bring your blood pressure down.
My advice to you, is to work with your psychiatrist to find a right regime to help your anxiety. In the mean time, find things to get your mind off of what is causing your anxiety. Read a book, do yoga, exercise, etc. You need to relax because your not doing your blood pressure any favors. Beat of luck!