I do think you should visit your doctor for a EKG examination since you are having tightness in chest.
They may also prescribe medications to control your blood pressure.
Uncontrolled hypertension is a risk factor for cardiac problems and stroke.So you should visit ER or primary care physician for proper diagnosis and management.
At least you need a medication to lower your blood pressure.
With chest related symptoms it is better to get a EKG done and not ignore it all.
Usually many patient with acid reflux get EKG done as a precaution.
It is a standard procedure to do EKG if any chest related symptoms are reported by patients.
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