There is always a change of hypotension
while you take tablets for hypertension
This may increase the workload of the heart.
But persist pain of the chest needed to be evaluated.
You may have to consult a Cardiologist
because hypertensives are more prone for heart disease
the normal people.
He may advise you for ECG and ECho to assess you cardiac status and help us diagnosis the cause of the pain and treat it accordingly.