To test or not to test that is the question?!

So long story short we are ttc, im now 6 days late for AF, although 3 days ago I got a BFN so bit scared to test again and see the same as this would be our rainbow baby, since my BFN I've had extremely sore breasts which I never usually get with AF plus very veiny too, lots of creamy white lotion like cm which feels like AF has arrived so has me rushing to go check, and tonight I'm experiencing what I can only discribe as pencil sharpening taste in my mouth?! Do you think I should test tomorrow with FMU or wait a few more days?! 

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