AF? Pregnant? Freaking!

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AF is due tomorrow...experienced light spotting yesterday which isn't normal for me...gave me some hope! We had sex last night nothing super crazy lol (I didn't wanna hurt the process IF one was started) but woke up this morning with a heavy flow. It was still very dark but enough to fill a liner. Could there still be hope?! I'm so sad bc I had a faint line on FRER