No period, negative test. Help?

Lajonta
I was supposed to start my period on 01-18-2016 but nothing has came yet, I had some brownish red spotting on 01-08-2016. My last period was on 12-21-2015 I have taken 2 test but they were both negative. I don't know if I am testing to early or what but I really hope I am pregnant. :) Does anyone know what could be going on ? 

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