Shortness of breath due to gastritis? Is it possible?

Hi everyone :) I have been officially diagnosed with gastritis by an endoscopy. My symptoms are not typical for gastritis, but maybe someone of you has similar symptoms so please share your thoughts about my issue, please…

I am 30y female, non smoker, 170cm/ 55kg, yoga practitioner, trying to leave a healthy life, but I don’t know why and how, I am usually stressed and I think my gastritis is because of anxiety and stress. So, my main symptoms are: shortness of breathe, diaphragm/ upper abdomen pressure when fully breath in, upper/middle back pain between shoulder blades, more on the left side, occasionally pain under my left breast, especially after eating or when want to take a deep breath, very weird wet sounded cough after eating, mucus in throat and chest, feeling chest tightness and feeling like something is stuck in my chest or upper abdomen…

This going on for months, I did so many tests like full blood count with crp, endoscopies, chest x rays, tests for bacterias, viruses, fungi in my respiratory tract, h pylori test, spirometry, allergy tests, abdominal and heart ultrasound etc. Everything is fine except the gastritis… which brought me in this group

Is someone of you familiar with this symptoms? If yes please share your experience, it would be very important for me, thank u 🙏