Goodness, Gracious, Great Balls of Fire! Heartburn in Pregnancy

So I wanted to write a post for each of many of the pregnancy symptoms and afflictions. I decided to start with heartburn because it's currently tormenting me.

I had never experienced heartburn before in my life prior to being pregnant. And I was a huge lover of spicy and fried foods. Which is really a problem now that I'm experiencing this indigestion. If you are like me, then you may not have known much about what heartburn really was (or felt like) prior to you experiencing it yourself! So I will begin with...

What is heartburn?