Hi, many thanks for the query!
Well, USG can have human errors if unexperienced person is using it.
You need to do- USG KUB, X-ray KUB, Urine (R&M), Sr. creatinine
, Sr. Uric acid.
Till then take antacids, antispasmodics, pain killers, syp. aptivate/any similar appetite stimulant with your doctor's opinion.
Drink plenty of water, eat high fibre diet, green leafy vegetables.
Wish you a good health.