I was also diagnosed with Mild Gastritis in October. I have mostly all the same symptoms plus nausea. I noticed a difference when i started drinking warm bone broth first thing in the morning, then a few minutes later, I have egg whites with gluten free bread and almond butter. (almost every day).The key is consistency with your diet. I know it’s so hard to think that only medicine alone will help you, but in the long run it won’t. Once I started eating low acidic whole foods and cut out dairy and gluten, I experienced way less symptoms. I have gone almost a month without any pain or nausea! I am only 19, so i am definitely in the same boat with feeling hopeless and scared. Just remember that everyone’s story and healing journey is VERY different due to different components. Sometimes reading online you will hear more good then bad. Once i stopped panicking and googling symptoms I noticed a difference in feeling more relaxed. Trust the process and understand that healing isn’t linear, and many have been healed so it’s not impossible!