Should I test now or wait?

Amber • Mommy of 2 boys
So I used Ovia and Glow to track my fertility and ovulation. I put the same data into each app everyday. But glow has a different period date than Ovia. According to Ovia I should start today but I have no PMS symptoms at all. I usually have cramps 2-3 days before my period and extremely tired but I haven't felt that. Ovia is saying test today but glow says my period isn't supposed to come until the 3rd. So my question is test now or wait until I'm late by glow?

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