thank you for your query.
There could be various reasons for fever with chills after Cesarean section.
There could be breast engorgement
with milk, leading to infection.
Urinary tract infection
due to decreased fluid intake could be a reason.
Retained products in the uterus, leading to fever is common.
infections could be present.
You need to have a consultation with your gynaecologist at the earliest to know the exact cause of the condition.
High grade fever during puerperium and lactation
is not a healthy condition.