Acidity & gas. Every test comes normal!

I am having gas problem from 6 to 7 months with hiper acidity occurs when no gas pas & gas comes upwards causing bloating acidity , fulness in stomach & the stool is also 2 times in day not properly having , i am prescribed medicine form a dr when my problem start but after few days when i get relief & stops medicine it occurs after days i consult with homepathy ayurvedic but not get any improvness I am takin razod in mornig , rantac mps syrup when having excessive gas , naturaflax powder for constipation & ucain gel syrup for acidity but when i take these i get relief but after few days back to normal condition Taking papaya daliya ,no masla oily food from past six months but not getting proper relief from this It also cause anxiety headache taking deep breath sometimes when excessive gas occurs Test - cbc , sodium potassium cholesterol Creatine ultrasound but every test comes normal