There is no strict limit to how many endoscopies a person can undergo in their lifetime. …it can be reasonable to repeat an endoscopy, especially after 5+ years.
Next Steps
1) Repeat endoscopy: you could have developed new findings.
2) H. pylori testing.
3) Try different PPi fro 8 weeks consistently.
4) Diet and lifestyle changes.
Health Tips
Likely not serious, especially with:
No weight loss
No vomiting or bleeding
No alarming changes
Contact for further details.