FMU- is it that important?

Ry
So I took these tests, clear as day positives, and by my calculations I'm due nov. 5th. But I just wanted to make sure so I took another clearblue and got the biggest, fattest, negative I've ever seen. The positives were with first morning urine, the negative was about 7 pm. Does FMU make that big of a difference? Which test do I trust? 

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