Trouble swallowing could be from scar tissue building up in the espophagus. I've had acid reflux for more than two years. If you're still having trouble on Zantac, you need a stronger medication. Zantac doesn't do diddly-squat for me. In fact, I may have to have the fundo...whatever operation to correct the problem.
Go see a gastroenterologist. I was in so much pain before I saw one, I ended up in the ER one night and they gave me a shot of demerol. As soon as I started taking aciphex, a medication that stops acid production, I felt better that day.
You may also want to try taking Gaviscon, an over-the-counter medication until you see the gastro dr.
Feel better, and make sure you go before you leave for Thailand!!!