Thanks for your question on Health Care Magic.
I can understand your concern.
In my opinion, you should definitely rush to hospital and rule out heart diseases for your symptoms because 2 weeks time is too much.
You are having high pulse rate, chest tightness, chest pressure (pounding). And all these can be seen in heart diseases like hypertension, arrhythmia (rhythm disturbances in heart) and coronary artery disease.
So better to consult emergency room and get done blood pressure monitoring, ecg, 2d echo and Holter monitoring (24 hour continuous monitoring of ecg) time rule out above mentioned heart diseases.
Don't worry, you will be alright.
First diagnose yourself and then start appropriate treatment.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.

Thanks for your question on Health Care Magic.
I can understand your concern.
In my opinion, you should immediately consult doctor because your symptoms are more suggestive of arrhythmias (rhythm disturbances in heart).
Your heart rate goes upto 125, this is very high.
Arrhythmias like atrial fibrillation, atrial flutter, supra ventricular tachycardia etc can cause similar symptoms.
If not treated promptly, this can be life threatening.
So better to consult cardiologist and get done ecg, 2d echo and Holter monitoring (24 hour continuous monitoring of ecg).
You may need anti arrhythmia drug on the basis of reports.
If all these reports are normal then no need to worry for arrhythmia.
Sometimes stress and anxiety can also cause similar symptoms. So avoid stress and tension, if you are having stressful life.
Don't worry, you will be alright. But first rule out heart diseases.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.