Hello sir, dont worry it's not symptom of heart attack
its because of lower respiratory tract infection
, please take homoeopathic treatment -bryonia 30 tds fr 4 days,
ferrum phos 6x+ kali mur 6x tds
for 4 days and reply back after 4 days. Need to do homoeopathic course for complete cure so for further assistance and treatment for permanent cure you can consult me privately.