Acid reflux? Heartburn? Chest cold?

So I am 25.2 and for the past few weeks I’ve been having on and off acid reflux or heartburn.

I’ve never had either in my life, and am a very healthy eater with no digestive issues ever until pregnancy.

The past few days, it’s been exceptionally bad when I wake up at night, to the point where it almost feels like the start of a chest cold/pneumonia.

Has anyone else experienced it to this level? Help🔥