I had sibo 3 months ago. the doctor prescribed xifaxan twice daily and neomycin for 14 days. i finished my medication middle of june 2023. this month same symptoms and have yellow color around my stool and diarrhea after meals?

You don't mention what your symptoms are. You may have developed post antibiotic irritable bowel syndrome with rapid transit of fecal matter through the intestinal tract giving your stool little chance for normal pigmentation. This should normalize after your normal bacterial population of your gut recovers. I'd ask your gastroenterologist about taking probiotics to help. Follow a soft,bland diet.