Sharp pains that runs through heart

Hi I'm a 21 year old female and I do not drink often I do not smoke often either I am about 5'4 147 lbs and I have really bad PVC's and palpitations everyday I also have a vitamin D deficiency I began having palpitations my freshman year of college about 2 years ago and they have gotten worse since then. I went from having a couple a week to having them everyday . I also have slight anxiety but I think it ties into the skipped and extra beats. I was on atenolol 25mg for a year and a half up until the other day . I also take buspar 10mg I have had an echo done the EKG the holter monitor and event monitor and all have come back clear. I sometimes have shooting pains than feels like my heart exploded like someone shown something through my arteries . I just wanted to kno if anyone else gets this feeling bc I hate it