I still have not got my w-2
You should talk to your employer about your w-2 form
What you mean
Your W2 lawfully needs to be postmarked by the 31st of January. Not necessarily received by the 31st. Either way, you should have it by now.
Sometimes the postal system is slow. My step-son just got his 2 days ago. If you don't have it by next Monday, get a copy from your employer. As someone else said, they have until Jan 31st to send it.