Papaya Enzyme Tablets helped me so much. And they taste yummy, not chalky. GNC or a health food store have them. I took two after every meal, and as needed.
I had that with both prior pregnancy. I used to think I could spit and put a hole in the cement it burned so bad. I remember resorting to taking a Zantac every once in a while when I couldn't handle the pain anymore. Try milk and tums of course. I feel for you but ur almost there!!
I do tums but pepcid is also on my safe list. But as for natural- try fresh papaya.
I've heard that taking a tablespoon of honey helps. Good Luck!