Upper endoscopy

This morning, I had my third upper endoscopy check for the stomach pain that I have encountered in these few weeks. Doctor said that my duodenum area has few ulcers, and I need to take medicines for 4 months. It was not comfortable to swallow a fiber tube, but I had experienced swallowing endoscopy tube three times. I should take good care of my digestive system this time. Don't really want to swallow the pipe again.