I'm sorry to hear about your heartburn. I feel your pain and had the same problem.
It wasn't until I changed my diet to a raw foods diet that I was finally able to heal myself. I also
drank raw cabbage juice 4 times a day too.
These 2 methods worked wonders.
As for the raw foods diet, it doesn't have to be celery sticks and carrots for dinner. There are a ton of recipes for raw foods that are easy to prepare and really good to eat too.
Also just because you start doing a raw foods diet doesn't mean that you have to do a 100% raw food diet. I still eat meat and chicken (cooked of course) but I'll also make myself a raw side dish too. I also had to stay away from all processed foods too. If I read the back of the label and saw an ingredient that I had no idea what it was, I didn't eat it.
My problem was that I had an enzyme deficiency. While I was doing the raw foods diet and drinking cabbage juice, I was also taking enzyme vitamins which helped a lot too.
Good luck and hope all is well...