Most cases of sciatic pain do go away on their own even without medical treatment.
The sciatic pain that a lot of people experience is self-limiting which basically means that the sciatic pain is not too serious of a health issue and will resolve and go away on it's own.
If the sciatic pain is not too serious then the sciatic pain should go away on it's own within 1 to 2 weeks but if not then you may need to see your doctor to get some pain medicines or other treatments for the sciatic pain.
When you have sciatic pain it's also very common to experience some numbness for a while after the pain has subsided.
But if the pain with sciatic gets worse or doesn't improve you should see a doctor or go to urgent care.