Welcome to e health forum.
Most of the symptoms mentioned do confirm that they may be induced due to acute gastritis.
Since you have already been treated with medications, you should follow your doctors advice and continue with them.
In addition to them, you can always try to reduce your symptoms by taking antacids (like Tums, Mylanta, prevacid) which will neutralize the acids.
Following good dietary measures mentioned below will also be of good help.
Foods that can help to improve your symptoms include
1. fruits such as pears, oranges, sweet limes, watermelons, cantaloupes etc
2. MILK products like - yoghurt and cottage cheese
3. Non Vegetarian food products - include - lean cuts of meat, white meat from chicken and turkey, and seafoods
Foods that need to be avoided include -
1. Alcoholic beverages, caffeinated drinks, carbonated water, and deserts high in sugar and white flour
2. Foods prepared from white flour, like puddings, breads, bagels and pretzels also should be avoided.
3. Vegetables such as broccoli, cabbage, all kinds of beans and legumes, full fat milk, onions and green peas should be avoided.
4. Nonvegetarian foods to be avoided include - cured meats and high fat meat products such as sausages, salami, ham, bacon, and cold cuts ;Red meats like beef, lamb, and venison - should be less in your meals
5. Seasonings such as onion, garlic, clove, and cinnamon may irritate your stomach lining and worsen the symptoms due to gastritis
Other measures that can help you in addition to the above dietary measures include -
1. Walking or running thirty minutes regularly
2. Stress reduction
3. Learn to relax with breathing exercises like Yoga
Following the above measures, should definitely help you get control of your symptoms and feel a good change.
I hope this helps.