i know where your coming from it sucks so bit for you
i had it really bad for awhile, and couldnt work out why, it turns out fruit juice (any kind) and oranges give it to me SUPER bad. The juice i was drinking EVERY day and night and then once i figured out that was one of the causes it eased up. i still get it almost every night, but no where near that bad.
Im just saying maybe something sets you off?
its an aweful aweful feeling but its not long now... you're almost there
I was eating a lot of oranges at one point, i was having like 3 a day to try keep my vitamin c up, but i ended up doing more damage than good, and i got severe stomach cramps from them. I stopped eating them about a week and a half ago, but its been since then that my heartburn is getting bad.

I thought it may be eating dinner and going to bed a few hours after, but im sure 2 hours is long enough to let the food go down??

I also usually lay down straight away after dinner, and watch tv. so maybe that isnt helping..??

I tried a glass of milk after dinner last night, and i had some antacid tablets, and sat up straight for about a half hour afterward, and i didnt get it last night....so i might stick to that little plan, and see how i go