I Am A 58 Yr Old Woman. I Am Average

I am a 58 yr old woman. I am average weight and exercise 3-4 hours a week. I take BP med and it is controlled. Father had heart attack at 62. Brother had on at 53. For past month I have had chest pain. I take 3 tylenol and .25 xanax and it goes away for about 5 hours and comes back? I also have stomach pain, which goes to my back sometimes. No vomiting or diahrea