You have encountered multiple losses Joe, and these can easily affect you psychologically, leading to mental stress which in turn can also raise your blood pressure. 
Its just so hard to forget about our problems, so difficult to ignore it or not to think about them, we are humans, I understand 
However, I think you should still remain intentional about your health, let's say, think about how your immediate family will feel if they see your health in a very bad state, then do whatever you can in your capacity to control those health issues please! 
Grace!!