Thanks for the query.
Are you having pain near the inner side of elbow ?
Any weakness gripping an object tightly ?
This numbness and pain could be due to possible muscle weakness
which can be due to many causes. Nerve damage
can cause muscle weakness and pain as well. Since nerve conduction study
has come normal, it could be development of muscle inflammation
or some fibrotic disease. Kindly stop smoking or drinking alcohol and it causes nerve and muscle weakness and also development of fibrotic bands as in Dupytren's contracture of hand.
It would be best to consult a Hand Surgeon or Plastic Surgeon to find any nerve entrapment like Carpal Tunnel syndrome
where nerve entrapment can cause weakness.
Eat plenty of fresh fruits and green leafy vegetables. Do daily exercise. Take Tablet Neurobion Forte daily for a month, twice a day.
Wishing speedy recovery.