Dark brown to black stuff coming out of vagina?

Okay, this morning, when I went to the bathroom I saw some gloomy brownish stuff on my panties, I supposed it was my term so I put a pad on. Just presently when I went to the bathroom it be kind of blackish, and my mom say I'm having my length way to precipitate, last month it started on the 29th december, and concluded on the 1st January. It is a bit early... I usually hold my periods in arrears, not early!

Please aid! I really like long answer but it doesn't really thing just serve me!! Good luck for your swimming tryouts tomorrow!
Just remember that if it is your period, to sort sure your well protected if you are swimming, any accident could potentially be very embarassing!!
I don't give attention to you ahve anything to worry just about, but if you are concerned definately see your doctor to put your mind at ease.
Stress can bring on this character of bleeding so try not to worry too much
it could merely be old blood