The stool report is OK, the amount of pus cells and fat globules are within normal range.
Greenish stool is sometimes normal in infant and nothing to worry for that.
It could be due to antibiotic therapy,as antibiotics also kill the gut bacteria those help in digesting food.
Just monitor the stool regularly for presence of blood (danger sign).
And keep the child free from milk / milk products for few weeks as temporary lactose intolerance
due to absence of gut bacteria may be the reason. Prebiotics
/ Probiotics may help in that case. However, dont use any medicine without consulting your doctor.