Your suffering from abdominal bloating and gas problem since 1 year, whether you continuously used medication for 4 to 6 weeks? , or not, you didn't mentioned in your question, R you have any
thyroid issue means low thyroid harmone(hypothyroid) it can cause constipation, R you using any medications and what medications R you using for your gas issue not mentioned in your question, probably you have gastritis,once again start using previous medication advised by your previous doctor for 2 weeks continuously, take stool softeners for your constipation like Syp.cremaffin 20 ml before 1 hour sleep for 1 week, take probiotics for 1 or two weeks
Next Steps
Your problem is almost since 1 year better you need evaluation for your problem , go for upper gi Endoscopy plus RUT test to check for h. Pylori infection, and go for
thyroid profile test,
My advise is better to consult physically once again near by gastro physician or surgeon if possible for you.
Health Tips
Avoid tea, coffee, caffinated soft cool drinks
Avoid spicy food and fried items
Complete your dinner 2 hours before sleep
Don't eat too much of fruits along with food fruits should be like snake in between your meals, needs good sleep for 6 to 8 hours avoid stress, avoid milk, for some days, backed items and cakes and cookies and chocolates for 1 to 2 months avoid citrus juices, take yogurt daily one cup for 1 or 2 weeks.