Welcome to Healing Well! You're definitely in the right place. I'm glad you've joined us. There's a great group of members here, and they'll give you support and information.
I assume you've been to a GI specialist with this. If you haven't, that would be your first step. You need to get some testing done to see what's going on. You need to get a barium swallow, 24 hour PH monitor, manometry, and endoscopy. They all sound terrible, but after what you've gone through, you won't have a problem getting through them. The toughest one is manometry, but I've had it twice, and it's very manageable. It's mind over matter, and not that big a deal.
It sure sounds like your LES is
open, allowing the acid to reflux into your esophagus. You really need to get this dealt with before going off to college. I'm no GI doc, but at your age, with those problems, you might be a good candidate for a Nissen Fundoplication surgery.
One thing that can help you right away, is to elevate the head of your bed about
7-8 inches. That way, gravity can help keep the acid in your stomach, even if the LES is
open. You can use bed risers, or cement blocks, etc. I use the bed risers you can buy at the store under the legs of the bed at the head. You can make it higher by adding a couple 4X6 boards under the risers. That's something I'd recommend you do right away.
There are lots sites online where you can find information about
GERD diets. Here's one:www.mckinley.illinois.edu/handouts/pdfs/gerd_diet.pdf
Best wishes! I hope you feel better soon!