Hi again.
Just thought of other things - you shouldn't eat late at night ie latest meal about 3 hours before going to bed. You should aviod tea, coffee, chocolate, high fat foods, alcohol, orange juice, tomatoes, peppermints - all of these either cause more acid or cause the valve at the top of the stomach to weaken and open, causing heartburn/GERD.
Theres loads of advice on the internet - just search on GERD.
Hope that all helps. Let me know if it helps or if anything else works for you.
Best wishes
Tess