What Is The Cause And Treatment For H-pylori Infection?

I have been in pain for a while now in my stomach. I have a bacterial infection in my small intestine called H-Pylori. That s what the Dr said it was called. I m on the 2nd day of stool specimens and have to drop off the hemocult cards at the lab in the morning. I looked at symptoms and the possibility of stomach cancer. I m currently experiencing 7 out of the 8 symptoms associated with stomach cancer. I m worried now and don t know if I have it or not? Am I being overly concerned?