Doctor Please? Bad heartburn or something worse?! Please I can't see the doctor?

I live in the UK and have had the same as you for the past few days but I do not normally drink fizzy juice like coca cola or similar and I had a gl a few days ago and it was just after that the heartburn started. I also have gallstones so I have to be careful with what UI eat but with you not normally eating the mexican food it could have been that it was too spicy for your stomach or the gingerale could be causing it.? I found that a hot water bottle helped the pain and stopped the gurgling in my stomach it was ok today. I also tried half gl warm water with some bicarb of soda which makes you burp lots but helps the heartburn. Good Luck