The chest pain
in your case is likely to be due to the myocardial ischaemia and high blood pressure
which you are having.
The bp of 220/89 is dangerously high and you should immediately consult the doctor/emergency and take the drugs for controlling blood pressure.
The NTG infusion may be needed for the time being to control the blood pressure and regula use of antihypertensive drugs.
You should also have the 2d echo, coronary angiography
to know any underlying etiology.
You should NOT delay the urgent treatment and seek immediate medical care.
wishing you early recovery for your health