it sounds like it could be an ulcer or maybe even heart problems, you need to see a physician......
That sounds pretty bad. If you cannot see your doctor right away, I have had good results with Zegrid. It is with the other heartburn medications. Just so happens that Walgreens has a coupon for this product at this time too.
I would really advise you to see your primary care physician as soon as possible.
Best Wishes