Hi, thanks for writing to HCM.
From the description of symptoms, it seems that you have injured your ankle ligaments (ANKLE SPRAIN
The snapping sound that was heard is due to the avulsion of the ligaments from the bone they are attached to.
Generally, these will heal within 3-4 weeks after proper immobilization in a brace or cast.
The general guidelines of management is as follows -
P - protection in the form of brace or cast
R - rest to the local part
I - ice packing
C - compression elastic bandage
E - elevation of the limb
scan is advised to know the extent of damage to the injured ligaments.
Hope this information is helpful. Good day