A couple months ago I thought I was just having severe
heartburn, but it turned out to be 2 duodenal ulcers
and it was a good thing I went to the er because they admitted me for 5 days. Better to be safe than sorry.
Of course, it could be a heart attack as well, but you're pretty young for that.
Tagamet or Cimetidine are 2 over the counter meds that work well for heartburn.
Only you know how much pain your in. If you can't stand it, get to the ER.