If you're concerned about any form of hypertension you should speak to your doctor. However, those symptoms are also classic panic attack symptoms. Yes, a panic attack can seemingly last for several days. What's really happening is, you have an initial panic attack, and after that you may have several "aftershock attacks" as I like to call them. They're residual, and they gradually decrease in intensity until they disappear for a while.
I experienced a panic attack this evening with all these symptoms. Yes, it freaked me out, because I generally worry about heart health, but things turned out just fine, as usual. So I do understand the worry, but it sounds like typical panic.