After you file

my taxes were excepted and approved on 01/31/20. I got a w2 in the mail the day after from a job i totally forgot about getting a w2 from. All my taxes have been approved and sent to me. I paid the extra amount to have turbo tax look over my documents and i efiled.  do i still need to amend my taxes? and if i do how can i do that?

 

thank you