Glow shows wrong fertile date?

Question

Has anyone had any experience with glow giving the wrong fertile dates? My most fertile day was supposed to be Monday the 4th. However, today I've has a very increased amount of CM, and Monday showed none. I'm going to buy an ovulation test today, but just curious if anyone else has had theirs different than glow predicts. 
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​We've been ttc for 8 months, and this is my first full month using glow.

Answer

I have not counted on glow to show my fertile time correct.. I use opk and only count on those to tell me when I'm ovulating then when u update that in glow it adjusts u accordingly

Answer

I've only been using glow for a week now and so far, compared to fertility friend and my temping it's off. I'll see how it goes next month if not BFP this month.

Answer

Glow normally is spot on but the more data u input the more accurate it will be xx

Answer

The best way to know is to do OPK and bbt together x

Glow shows wrong fertile date?

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