Urgent! Reporting SAT Subject test score!

<p>Hello, I was going to submit my common app.
The problem is that I did Dec. SAT subject test and the score will come out after 2 days from today. I can't wait till that time, and moreover, I already have score for three SAT Subject test. So, this Dec. one is optional. Do I still have to indicate that I have written Dec. SAT subject test on Common app and leave the score part blank?(Because common app said best score and future date, I'm bit confusing, and I also don't really think I did well on Dec. test.) I'm worrying if I indicate it and my score is not good enough, what should I do? </p>

<p>Thank you for any help!!![:)] </p>

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<p>I added cool smileys to this message... if you don't see them go to: EXPS</a> Redirector</p>