Heartburn

Annette
I occasionally had heartburn and it hasn't been too bad, but this past weekend it has been terrible. I did take something but it would always come back really bad, mostly when I was trying to sleep. It was so bad at one point I threw up. I haven't really been eating a lot (I haven't had much of an appetite) and what I've been eating is not really spicy, so I'm not sure why it's gotten worse. 
Has anyone had this problem before? Do you know what might have caused it?
My body has just been very weird lately and I feel like it's trying to drive me insane