Hi welcome to the health care magic Here right sided abdominal pain could be from liver affection, gall bladder problem or colitis... If no organic cause present than this could be simply from functional bowel problem or from constipation... USG, CBC and Liver enzymes estimation like investigation can be done according to examination For colitis suitable antibiotic can be prescribed Bacterial overgrowth can be causative for which rifaximinie like drug prescribed According to cause specific treatment given Meanwhile fruits eaten more and avoid smoking If you are having chronic constipation than ispghula husk with milk can be taken Take care Consult physician for examination