af due today

Kirsten
So af is due today but no sign
However when I wipe there is a little bit of brown colour on the tissue
Could this be due to implant bleeding or is it too late for that? 
Shall I test today? I done one last night and it was negative 
I really hope it's the start of good things but unsure if I should test yet or not! ?
I've had loads of symptoms I just put down to maybe af as not trying to get my hopes up 
What you you do and what do you think? 

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