"I have a history of l5-S1 herniated disc 30 years ago, for the past 3 weeks I have been experiencing pain in my lower back with numbness in my left leg."

It is important to consult your family doctor in the next few days if you are experiencing numbness in your leg, as it could be a sign of a problem in your back that needs to be addressed promptly. However, there is no need to go to the emergency room.