From your description seems to be lumbar discopathy or acute radicular syndrome
, it is possible in the past you have had similar episodes or almost . If pain radiate to left hip then probably sciatic nerve
affected, compressed . In this situation you must seek specialist consultation with properly imagistic exam of your lumbar aria and injectable medication of course, PO medication alone will not help. Also additionally after acute stage you need physiotherapy
in specialized center twice a year to prevent recurrences.