Do I need to take blood pressure medications if my blood pressure goes up due to prolong stress?

Depends. I generally treat patients with high BP if his or her average pressure is greater than 140/90. If someone is having temporary stress, for example going through a divorce, I rarely treat high BP that develops during that time, but rather wait for the stress to abate. If u have stress all the time, and your AVG BP is >140/90, generally u would be treated, a beta blocker would be a good choice.