Acid Reflux?

I’ve never been one to have heartburn or acid reflux so I need some help. This is the second episode I’ve had in about two weeks. I’ll have a feeling of something stuck in my throat/chest and I feel like I need to burp to get it to go away. I’ll burp but no changes. Last time it lasted about half a day. I don’t have a burning sensation. Is this acid reflux? I’m a FTM and almost 27 weeks.