ive been having the same thing and I don't wanna take medicines for it..
Small amounts of pickle juice helps me. When u lay down lie on your left side.
Tums helps me a lot and it doesn't hurt the baby at all. It's just calcium.
You could try eating small portions, staying away from fried foods and anything with bubbles. Also see if you can get some alkaline supergreens supplement which will help with the acidity.
I don't beleive my case is a worse as yours but I asked my doctor to perscribe pepcid and it works miracles for my reflux.
Try eating Fresh Grapefruit. It turns the acid in your stomach to alkaline. Eat one every other day and it will prevent the heartburn from irrating you. An ounce of prevention is worth more than a pound of cure. Trust me it works wonders ♥
I think mines gotten so bad that nothing helps it not even tums or anything but I don't like taking meds bc it makes my anxiety worse..