Late period

Samantha • 24• Want a big family• Newlywed ❤️
I am late by 7 days for AF. Took a PT and got a BFN...I am so emotional! And now I went to the bathroom and I found like white clumpy discharge on my panties! What is going on? Btw I am never late- always get it on either the 6th or 7th of each month.. Less time was October 6th!.. Help :) thanks ladies