dark tarry stool 续

Last  last Saturday, I found dark tarry stool and worry about stomach bleeding which happpend to me 4 years ago. 一到周周日就去查了专科医生, took breath test for H Polyerio and CBC blood count test. Last friday it came back all normal. And actually my stool only once looked dark and oily.

一切正常，医生还是坚持让我做胃镜，需要吗?

 

Thanks in advance.