Hook effect
Hook effect post!
If you're insane like me and test way past when it's helpful, don't worry if you get a lighter line! It's because at a certain point the HCG levels get too high and confuse the test.
I'm around 7 weeks and suddenly my tests were much lighter. I filled the cup with about 1/3 water and 2/3 urine and these were the results (just urine on top, + water on bottom).

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