I was diagnosed with GERD 4 years back and I had redone endoscopy a month back and found mild antral gastritis with gerd, from 2 days I have nausea ,loss of appetite, bitter mouth. I was continuously eating ice candies from 1 month and yesterday I ate tamarind paste, I have pain in lower abdomen in right side ribs pain and lower right back pain ,can it be due to kidney stones or liver ,should I go for abdomen scan.