What Does It Mean When You Feel Your Chest Is

What does it mean when you feel your chest is like a squeezing vise. only happens once in a while like twice a week. than nothing it goes away. I'm 66 years old, I look fifty. I work daily own an operate a family restaurant
and I do have staff problems and yes bills. Just to give you a bit of my back ground. hope you maybe able to help. Thank you!
sincerely, Warren Schmidt