What are the symptoms of high blood pressure?

That is the problem. I many cases there are no symptoms. This is why you should check it regularly, especially if you are under stress or over weight. 

there's no ongoing symptoms it just contributes to heart attack or stroke if not controlled.

U feel a bit of ear ringing when u over eat u feel more breathing like u ran

Although some may experience headaches, shortness of breath, and/or pulsing in their head or neck, high blood pressure generally does not present with symptoms. This not only delays diagnosis, but causes people to not take their blood pressure medications because they don’t feel a difference whether or not they take it. However, when blood pressure goes uncontrolled, over time the subsequent damage in the body puts the person at increased risk of heart disease, stroke, and kidney disease. This is why regardless of the presence of symptoms it is very important to see your doctor annually so you can be screened for high blood pressure.

Bitter tea, fish oil, cucumber. Insya Allah help. Allahu akbar ! Viva Indonesia !

Often there are none (except for your monitor reading high over high).  That's why it is called the silent killer.