I am going to second Jane's post with the disclaimer that I am not a medical doctor.
Because more potent drugs exist, it does not mean we should go for them first. My suggestion would be a step up program rather than a step down program, which is what I have recently gone through with great difficulty. By step up, I mean to modify your diet and try natural remedies before you go into the PPI's full force. I also second the idea of taking Zantac or Pepcid (two H2 blockers) rather than a PPI to see if they take care of your symptoms. H2 blockers are not as effective as the PPIs but they do not cause the same type of acid rebound, and may be all you need at this stage.
Even short term use of PPI's causes dependency, such as when you try to get off them, you experience a phenomenon called "acid rebound." The rebound can be worse than the original symptoms and keep you on the PPIs longterm.
PPI's are very effective, but knowing what I know now, they would never be my first line of defense against heartburn. I started a thread "Getting off PPI's and acid rebound" in January which is now closed but you may want to read through for a discussion of acid rebound and why I chose to stop taking a PPI three years later!
If you have time, please read through others' posts regarding what types of remedies and medications they have tried, and what has worked or not worked for them. For example, a lot of dairy, coffee and tomato products are bad for heartburn. There are also natural remedies that can soothe the esophagus and make heartburn more tolerable. Products like aloe vera juice and DGL help coat and soothe your esophagus and heal irritated tissues.
Become an informed consumer/patient so you can be your best advocate. Even if you go to the doctor, it is more likely than not that you will be handed a PPI prescription without any warning of potential side effects. This has happened to me on multiple occassions, and I have learned the hard way.
I have no problem with PPI's being cheaper and available OTC, but in my opinion, they should include warnings about side effects, rebound, increased risk for hip fractures after long term use (three years), etc. None of this was ever explained to me in 2006 even though much of the literature was already out there.
Best wishes and hope you feel better very soon.
Rose