I Had A Minor Heart Attack In June. The Last

I had a minor heart attack in June. The last month I have been experiencing some strange symptoms. I feel exhausted all the time, I have a pressure in my chest that sometimes includes burning, I have a headache off and on, I have brief moments of extreme anxiety. When I had a heart attack before I had no symptoms at all that I could recall. Im worried I may be working up to another heartattack.