OK I've been totally gluten free for 14 days now, and I still have heartburn.
groundhog, can I have permission to eat a goddamn muffin already? Or do I need to keep on it?
Zuzu, I think any benefits from being GF would happen within 2-3 weeks. If you haven't had a "eureka" moment, it's possible that being GF won't help. I don't think it's possible to master the GF diet in two weeks, but if you're not a "true" celiac, it's unlikely that small amounts of contamination would stop your healing.
You could give it another week to be really sure. Or you could try gluten: Sometimes that might show results - e.g. you get really sick after eating gluten after being GF for a time.
Hope you're getting some relief!