Mother nature may be playing with my emotions.

I got my period at the beginning of this month on jan. 2nd. According to glow my period was supposed to start on the 26th and to this day no period yet. I took 2 pregnancy tests yesterday and both came out negative. I'm wondering if there is a possibility I could be pregnant or there could still be a chance my period is coming on Feb 2nd. It's so nerve wrecking. Fill me in on some opinions Girls.