Gas and Bloating in upper abdomen

For almost a week I am suffering with gas and bloating in upper abdomen, 3-4 inch above the belly button in center of abdomen is the spot. I don't have pain but there is consistent pressure and feeling of gas being generated in that part.

My problem tends to get worse in the evening. There is fullness in upper abdomen and sometimes it gives me nausea. I am burping a lot but that doesn't help much. No passing gas enough from anus. Even when I do, my abdomen gets bloated again in no time.

I have already consulted an allopathy doctor but his medicines haven't made any difference.

I am 33 years old male from NCR. My height is 5 feet 8 inch while weight is 58 kg.