Suggest Treatment For Severe Shortness Of Breath And Profuse Sweating

I have been in the hospital twice in the last 3 weeks . June 6 bp 198/102 with numerous pvc s did calcium score which was 0 echo good . Started me in toprolol xl 25 one week later starting having pain in back a couple hours later Shortness of breath sweating . Hi back to ER bp 162/90 pvc s admired me again did nitro patch and sublingual tabs. Did nuclear stress test lady Friday showed some shadows . The dr compared to two years ago said probably was ok . Had heart cathe 3 years ago said had irregular heart beat otherwise normal. Herat disease very bad only family both parents died from it . My sister has a widow maker artery and my brother had to have a impella machine two years ago to save his life . I think because I don t smoke or drink my calcium score was 0 but does that mean I can t have any blockages . I am 56 year old female