Glad to hear all test were in the normal range. Antibiotics are used to treat chronic gastritis caused by infection with Helicobacter pylori. Have you been tested for H-pylori ? For most people gastritis isn't serious and improves quickly with treatment.
Antibiotic regimens are different throughout the world. In the United States, antibiotics prescribed for treatment of H. pylori include amoxicillin, clarithromycin (Biaxin), metronidazole (Flagyl) and tetracycline.
Proton pump inhibitors reduce acid by blocking the action of the parts of cells that produce acid. Perhaps you would do better on a different PPI ?
Histamine (H-2) blockers — reduce the amount of acid released into your digestive tract, which relieves gastritis pain and encourages healing. Available by prescription or over-the-counter, acid blockers include ranitidine (Zantac), famotidine (Pepcid), cimetidine (Tagamet) and nizatidine (Axid).
I am sure your family Dr. will make the right decision on how to treat you, however, remember to be your own best advocate.