Help gush of light pink spotting

This is weird I ovulated 4 days ago so I’m 4dpo, last night I felt gushes of wetness when I went to the bathroom my whole panty liner looked watered down pink but when I wipe there was just a little bit of pink spotting almost nothing. Got me thinking that maybe it didn’t come from my vagina? What was that? Am I spotting from vagina or what. :/ could it be an infection? *Picture is dried*