If your spouse filed jointly, then you cannot file a separate return.
What you will need to do is wait until your return is processed to see if the IRS catches the mistake. If they do, they will send you a letter tell you that you left your W-2 off of the return and make the adjustments for you. If they do not catch the mistake, then you will need to wait until the amended forms are available and add your W-2 to the amended return. The amended forms are expected to be available in mid -February.
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