Small twitches/spasms in heart. Only 17!

Hey docs,it's me again my life is been downhill since pandemic..just wanted to clear this out I have had all heart tests few months ago and they all come back normal..but for some days I have been feeling something I have never felt before..I have been getting these strange sharp pains in my chest back and arms lasting for a flash or few secs and that might not be a problem however I have been getting these strange vibrations and spasms again and again lasting few seconds too but yesterday I had series for small twitches/spasms in sync with my heartbeat for atleast a minute or two I was panicking and sweating my heart wasn't fluttering or skipping it wasn't too fast or slow either it just felt like it was malfunctioning like the beats were not proper(the twitches kept happening in sync with beats and then it was gone) I have a oximeter and fibricheck and immediately checked my heart rate and rhythm after that happened and it looked normal..what is this doc pls help me,I am only 17