Related to heart health query. Normal!

Hi i have done one echo in November 24 which normal i get palpitations slowly my pulse rate increase to 170, second echo in  16 February 25  because on 15 January 25 i get all of sudden increase in pulse rate 198 ,i have anxiety also  ,third echo in 18 march 25 for satisfaction, all echo are normal if I wish to do another echo only one more time can I do in less than a week in March  itself only because I get chest pain for few seconds then no chest pain and the chest  pain is like shooting pain like we prick needle in hand  in left chest. IS echo frequency will affect my heart as I am only concerned the chest pain i get only concerned anything in valve damage had happen or not can I do one more echo.i little scared ki frequency sa heart pa koi effect na jaye please help me and ECG i have done two times not at the time of palpitations but random which is normal