How do you know you have a gastric ulcer? Was an endoscopy
done on you? N occult blood cannot be seen with naked eyes .... Only can b seen under microscope. ... if all these tests are done and u have positive gastric ulcer and positive occult blood on stools... then u should check your complete blood picture, to see if there is any fall in the haemoglobin
, n treat the gastric ulcer with antibiotics as majority of the cases of gastric ulcer can be because of a bacterial infection, but detailed examination should be done.