Are you applying this cycle? I recommend doing everything you can to avoid submitting late! There's stigma associated with being a reapplicant (at some, but not all schools), and if I could do everything again, I would probably have waited a cycle before applying. Have you been doing really well on your practice scores? If you get above the 95th percentile, then I think it's a different story and you can probably apply later still potentially have a good cycle.