My budgie Opal was experiencing regurgitation and lethargy symptoms. Took him to the vet who said his fecal gram stain was highly suspect of AGY. He was started on Ampho but his PCR test came back negative for AGY. We decided to continue treatment because vet said PCR could be a false negative and his fecal test she was sure is positive for AGY. He’s on day 21 of ampho and his health has taken a decline. He was doing much better before treatment. He is regurgitating/vomiting, his weight has gone down to 32 grams, he looks unpreened and unkept. His appetite is still there and he’s still quite active. Vet also put him on TMS or Sulfadimethoxazole w/ Trimethoprim along with visbiome probiotic but that seemed to worsen symptoms. Right now I’m going to stop the antibiotic and just give him the ampho. Any thoughts on this and how I can make this easier for him?