Which one to believe?

Question

The glow chart says that my fertile window for this month 8th-14th? But then another app it says 14th-19? 
Which one to believe? Please, help. I'm confused.

Answer

Take an ovulatietest to be sure

Answer

I'm on my AF right now and I answered both the same. So IDK which one to go witm

Answer

Use ovulation tests after cycle  day 10 you can get cheap ones in bulk online 
Test after lunch time too

Good luck

Answer

It all sounds confusing. I hope you find the peace before it drives you crazy. How long have you've been trying? Let God and prayers help you. I tried this programs what three months and got pregnant.

Answer

Take daily opk. Then you will see which one is accurate