Palpitations near neck. I would die.

Hello there. Greetings. Respected Doctors. I am 36 yrs old unmarried female with slim body. I used to do regular physical activity. But since past months during lockdown I have been sitting and working. So today after so many months I was working like cleaning the floor and mopping (using hands) and sweeping. Post that I felt too much palpitations and restlessness ..i felt it near my neck seems where carotid artery is present. Also now I am having palpitations through out like doing physical work .. A little bit breathlessness cuz of palpitations. I am not diabetic nor have thyroid issues. I googled up it says I have a heart attack. Pls help me.. My city is still in lockdown phase. I can't go to the Doctors. Pls help. I am scared I would die. Thanks and regards.