Palpitations again?

So for the past couple of days, I've been getting this sudden anxious feeling in my chest. It startles me and I always end up pausing what I'm doing because for a split second it feels like my heart stopped (cue the panic). It happened again today. I felt tiny sensation in my chest this morning when I bent over to pick up something. But this afternoon while I was sitting at my desk I felt the rush of anxiety followed by a fluttery sensation in my chest. I really don't want deal with palpitations again. The intrusive thoughts suck enough without having to worry about my health. I went to the doctor ironically enough, around this time last year for heart palpitations. They did an EKG and it came back normal. I just hate this. I'm so tired it all.