13 dpo. Irregular cycle

Maddie • http://www.infowars.com/this-is-how-babies-are-aborted/ Very informative.
I have irregular periods, so even when glow says I'm due, it doesn't always mean it's true. Last month my period came sooner than glow predicted and in the past AF has not shown up for months at a time. Anyways. I'm 13 dpo and according to glow AF is coming tomorrow. Can I test today or should I just wait till tomorrow? Thank you for your time.

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