Implantation or af?

I had cramps earlier and now nothing. Not the slightest one. Which is weird. Usually i have cramps my whole period. This morning my hubby and i had sex. And after i had pink/light brown discharge. After that it turned red. Making me think its af. And now nothing...

Which i normally have a dolid heavy af. I just wiped with this cloth. Any thoughts? Oh ps af was supposed to start on Wednesday

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