I just experience it in my chest. it doesn't last very long.

I experienced two types of heartburn. The one I always get is a uncomfortable feeling in my esophagus, a slight burn and I have to belch constantly. I'll take 3 Tums and it's gone. The other one I thankfully only get like 1-2 times a year is a extremely painful stabbing pain right in my rib cage triangle and the only thing that helps me there, is to drink 2 tablespoons of white vinegar.

wow, I've been having heartburn for the last 2 days then.

A burning right in your chest

It's like a burn in the chest and throat. kinda like after you eat something spicy but without the spice in the mouth