Can excess gas or heartburn make you feel breathless?

I suffer badly with anxiety and I've been getting a lot of heartburn/ acid reflux symptoms whenever I eat, which is already scaring me.

Anyway, I had some food at about 11:10AM today and since then I've been feeling bad on-and-off. For example, suddenly I feel this sharp pain in my chest and then my heart will start to beat rapidly and I feel breathless! Right now my heart feels calm again but I feel sick and almost like my insides are "burning" Don't get me wrong, I don't feel hot or anything! That's really the only word I can describe this sensation as... I know that sounds stupid.

So, my question is: Can acid reflux or heartburn make you feel breathless, sick and make your heart feel as though it's thumping wildly? I feel like I'm one more attack away from going to the hospital!

Thank you for your time.