Glow says it's peak day but chance of pregnancy is 30% why so low?

Question

Hi!
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​I have been TTC for 3 months. Just started to use Glow, I like the app but am a little confused. It has said today is my peak day but chance of pregnancy is only 30% ? why so low? I am over weight but when I played with the stats it made no difference to the %. I am logging my opk results and bbt so I am not sure what I am doing wrong! Any advise would be great ? x​

Answer

Humans are remarkably inefficient at producing offspring. That is why most docs won't perform fertility testing on young otherwise healthy couples until several months of trying have passes. 
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​30-33% peak is the norm.  So only 20-30 % of couple will conceive the first month of trying but 80% will conceive in 6 months and up to 90% after 12 months. 
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​Good luck, keep BDing, and baby dust to you.

Answer

I think the max is 33% 
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Answer

Thanks Louisel. I couldn't remember the max number. BTW, I <3 your name!

Answer

Im 24 and mine always says 33 percent. I would take it with a pinch of salt as it's only a predictor. As long as you know your window you will be covered. All the best xx

Answer

That's roughly the percentage I get, I think it has a lot to do with your age. I discussed it with some other people, I forget the name of the thread, and it seemed those who had 30% as their high numbers were near or over 30. How old are you, if I might ask?
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​I'm 32, and my peak day tops out at 29.8%. I'm also slightly overweight, but I hadn't tried a lower weight to see if that made a difference to Glow.

Answer

The highest it will ever be is 33% - it drops with age etc so 30% is pretty normal. It's because even with perfect timing etc you still only have a small percentage of the sperm fertilising the egg or that egg implanting ok.

Glow says it's peak day but chance of pregnancy is 30% why so low?

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