Why does it look like it's surging again?

Amanda

So my <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> originally said my O was expected the 4th so i started testing and then the date moved to the 8th. My bbt dropped on the 8th but now the tests look like they're getting darker again.

Is that normal?

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