Dealing with GERD and Gastritis Symptoms

I have GERD. Had a bout with what I believe was gastritis back in 2018 though it was never properly diagnosed. Dealt with a dull ache and burning for well over 6 months. After being fed up with doctors not helping, I tried nutrition. Drank cabbage juice for two weeks and shockingly it went away. Fast forward to now and I have a similar pain with mild epigastric pain mostly when I poop. I also have heartburn and stomach inflammation. Started my cabbage juice again this week. I’m not in pain just in discomfort all the time. Feels like my diaphragm is inflamed. Went to urgent care and they told me nothing but to take otc meds for acid reflux. Today the pain went behind my sternum into my chest and it freaked me out. I almost had a panic attack. Going to my doctor next week. Do any of these symptoms sound similar to any of you? I’m freaking out over. So scared.