If you have a broken egg, you can recover it using the Egg Delivery System.

Location:
https://maps.secondlife.com/secondlife/Anoha/141/171/22

How to Use
Visit the Egg Delivery System at the Clinic.
Click the system.
When prompted, drag your broken egg from your inventory.
Hold Ctrl while dragging the egg onto the system.
Wait for your replacement egg to be delivered.
Rez the replacement egg immediately.
Once rezzed, the system will restore your egg automatically.
⚠️ Important
Please rez your replacement egg before processing another broken egg.
Only process one egg at a time.
Do not leave the area until your replacement egg has been delivered and rezzed.