Thank you for your query at DoctorSpring.com
I understand your concern.
From your history, it does seem like you have GERD as well as gastritis.
Have you received any treatment as of yet?
Endoscopy is a better diagnostic modality for these problems, but you can try a course of Cap. Omeprazole 20 mg twice daily for 2 weeks, and probiotic supplements twice daily for a week.
Let me know if you feel any improvement after taking Omeprazole.
Feel free to discuss further,