Sciatica is a condition that affects the sciatica nerve. It tends to be pain that radiates from the lower back down one leg. Other common symptoms can include numbness, tingling, or muscle weakness. Here are some signs that you should see a doctor:

• Loss of Bladder or Bowel Control: Losing bladder or bowel control is a rare symptom for sciatica, but is very serious. It could indicate a condition called Cauda Equina Syndrome, which occurs when the nerves at the base of the spine are compressed. It’s important to seek medical attention immediately if this is happening. 
• Pain Interrupting Daily Life: If you’re finding it difficult to perform daily tasks due to intense pain, it may be time to contact your doctor. 
• Numbness or Weakness: Experiencing severe numbness or weakness in your leg can be a sign that a nerve is severely compressed. Ignoring these symptoms could lead to long term damage which is why it’s important to contact your doctor.