What is this ?!

Okay so the second picture is this mornings test as soon as I took it . It had an obvious white line / indent . So I threw it away . Well on a whim I looked at it again 4-6 hours later & now it’s an obvious PINK line . First picture is now 4-6 hours later ! Some one give me some advice 😬😬 I had a fainter pink line 2 days ago within alotted time 🤦🏼‍♀️🤦🏼‍♀️

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