No dear,this is normal pain after surgery.
the nerve is now overfuctioning, again after a longterm harming and compression by the L4-L5 herniated disc.
the " neurological filter " will recognise soon the real and the fake sensations and it will impose a more logical sensation after 6 weeks from now.
the episodes of pain will last more and more for a shorter time, ending progressively
best wishes.. always remember no need for EMG before 2 months after a lumbar surgery
Thank you very much Doctor..I really appreciate it.