I think you misunderstand him
What you have is called umbilical fistula ( nasoor ) , which is abnormal opening in the umbilicus ( al sora
)
This opening secrete dishcharge and must be treated either medical with antibiotics or surgical in most cases
surgery is done wit preserving the umbilicus and it's done usually with a laparascope ( mnthar ) with minimal scar
Your best thing to do is sit with your doctor , ask for operation details , and tell him your concerns and he will tell you everything inshallah
It's a simple surgery don't worry and you must do it the sooner the better to avoid complications
Sorry for writing in English no Arabic keyboard
O ma tshoof shar