Hi, I Have Pain In My Chest On And Off

Hi, I have pain in my chest on and off and shortness of breath when I'm just going for a walk, especially right after eating. Also have swollen feet and ankles on most days which gets better if I have my feet up. If I eat a bit too much especially spicy food I will wake up at night with a lot of acidy food in my mouth, and that really hurts, I can hardly breathe.