can my spouse file for divorce after i have already filed

If I understand your question correctly, it depends on whether your spouse has been served or not with the compaint.  As part of the filing the complaint, the person has to certify that there is no existing case on the matter.  It doesn't matter who files, you will still have a chance to respond to the claims in the complaint and  if you disagree with anything in the divorce papers, then you will have the opportunity to file papers telling your side. This is called “contesting the divorce.” If you contests it, then you will have a series of court appearances to sort the issues out.