Sudden Shortness of breathe, panic. Tq!

Hi all, myself Jagadish age 26yrs ,it has been 5mnths since I recovered from covid and am doing my job daily regular life activities without any issues but at sometimes don't know all of sudden some strange things happening to me like sudden shortness of breathe and some abnormal heartbeat like sudden spike in heartbeat and low after sometime and some dizziness in my head due to this am getting panic and due to panic heartbeat increasing again all this happening for sometime  ,,am doing walking even running at that time also my hearbeat is in control but all of sudden the above mentioned things suddenly happening and getting fear of heart related issues like am i get hearstroke or what,,,,can u plz help me why this is happening and what I need to be done. Note: BP normal and no health issues apart from above one.TQ