Can't burp (myself, not baby)

I've had really bad nausea that's been lightening up lately, but now I can't burp and it's making me stay sick. I have hubby pat my back sometimes but I just burp up liquids and what not. I just want air to come out! I went to go throw up, and right as I thought it was coming I let out a giant belch and felt a million times better. Anyone else having this issue?