Welcome to Health Care Magic.
I have gone through your query. Based on the information provided , you are suffering from Acute follicular tonsillitis
The heaviness you are feeling in the chest is due to chest congestion secondary to pharyngitis, tonsillitis and post nasal drip
You need to initiate Antibiotic therapy as soon as possible. Salt water or betadine gargling shall relieve the soreness. Coming to Heaviness of chest you need to use a decongestant and mucolytic syrup . So, Better see a doctor as soon as possible because if neglected it may lead to septicemia.
is known to cause rheumatic fever
. Do not worry the chest pain you have been complaining of is definitely not due to Rheumatic fever rather it is due to congestion.
Wish you a speedy recovery.