NEXIUM (A rx) will help heal the esphogal tissue- it takes about 8 weeks. From what I read some say it can be healed others say you'll always have it.

Try to keep a food diary for a little while, note what you eat, then write when you had some reflux or heartburn. Hopefully this can help your sort through things.
Also, stress/worry can play a big part in it.
Do taking tums help at all? I would try to buy a little pill over the counter and see if that works better until you see your doc. YOu should probably get it check as soon as possible as all that acid coming up isn't the best thing for you. IF its happening that frequently it could be pretty bad.

good luck