My first thought when I read your letter is how are you checking your blood pressure (BP)? Are you getting it done by a professional, or are you using one
of those little machines to do it for you? If you are, the machine may not be reading your BP correctly. I would try going to see your doctor's office (or whoever is covering for you doctor) for more accurate readings. If your BP was high at the doctor's office, I am sure that they would look at your medications to make sure you are taking them right. They would also examine you to try and find out what the issue is.
Regarding BP's going higher with stress, this can happen, of course. If you are stressed, you need to find ways to control your stress level. First, make sure you diet is as healthy as can be. You can drink, but you should have no more than one glass of wine or beer daily. If you smoke, stop. You also should try and get some physical exercise. Even a 30 minute walk each day would help. Another thought I have about you is are you sleeping well at night? Sometimes sleep apnea can cause the BP to dramatically increase.