Thanks for the query
Your baby's stool is positive both for amoeba and pus cells that is suggestive of both bacterial and amoebic infection. So treatment with both antiamoebic and antibiotic was needed. It is uncommon to get amoebic infection in a breast feed baby,but can happen. So maintenance of proper hygiene is essential. I hope you must have started complementary feeding along with the breast feed. If not then start it immediately as it should have been started at the age of 6 months only.
So I would suggest you to also give one antibiotic along with metronidazole
. You can also give cotrimoxazole. Start complementary feeding if not started yet and maintain good hydration of the baby.
I hope this answers your query well
Wish you and your family good health