Though I am not usually a person who goes for alternative remedies, I really found that some herbal groups can really help heartburn. They do just as well as over the counter medication but are of course all natural. There are a number of them and you may have to do some trial and error to see which one works best for you.
Whether you go with alternative or conventional medication you need to try to get rid of the problem or at least lessen it. GERD can cause serious medical problems in the long term if ignored. For anyone interested here is a nice article on the subject.