Feed issue n need help with stool result

My infant of 5months has been resisting the bottle for about 3weeks now the only way to get feeds into her system is when she's asleep, she has no fever.. she has been EFF since birth on lactogen only... She fed well till three weeks ago when all the trbl started.. she would kick scream n arch backwards acting like when she had her colic episodes.. noticed her stools would be greenish wth a paste consistently lumpy thing in it rest of the stool would be normal... For two weeks doctor has tried all meds like carmicide, coliaid, ibugesic plus n now Digeplex drops but nothing is working... No improvement... Doctor called for stool routine test. The concerning thing in her result is below:- Stool is alkaline however there r 8-10 pus cells along wth some reducing substance present n macrophages present n Epithelial Cells occasional .... No signs of occult blood or RBC... Is this an infection?? We maintain up most hygenie .. confused abt her condition