Eat anyway. Then the anxiety will go away, at least on this one episode. Eat something very easy to digest, such as broth or a banana. You're going to eat sometime or die, so why not now?
I want to eat I do but I'm just too scared any help please.
100 % agree with paxiled. Worse thing you can do is not eat, especially with anxiety. Eat small meals and it wouldn't hurt to speak with you parents about meeting with a therapist. Don't worry too much. I was around your age when I began to have issues with anxiety. Try to do something you enjoy and start eating smalls meals throughout the day. Also, be sure to stay hydrated.
My understanding of GERD is that it comes after eating, not during and not before. Often it comes if one lies down too soon after eating. Because GERD is a digestive problem based on a problem with acid production being thrown off in your stomach, not eating is not a great thing either -- eating small meals through the day is better. So you're not really helping this particular problem by not eating. All these names -- GERD, gastritis, etc. are just names for a digestive problem that can be caused by stress, not chewing your food thoroughly, eating too quickly, eating foods you don't digest well because of intolerance or allergy, etc. The cure is to figure out what to eat, when to eat, and how to eat, not to stop eating.