A little web search looks like this is not cancer, but you should be monitored for cancer as it is a risk factor.
I found an article discussing whether intestinal metaplasia is reversible.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1773527/
H. pylori, or Helicobacter pylori, is a bacterium that causes ulcers and other intestinal problems - you're negative for that.