that being said i know people who have "known" within hours but i guess thats not hormonal is it?
I assume it's hormones of some sort. I know within hours. Turning into a cranky biatch and having nasty heartburn for a couple of days after are a bit if a give away. Then it fades & I doubt myself, but turns out I was right.

It doesnt really make a difference though except for speculation and feeding POAS addiction you're either pregnant or you're not.

GL. Update when you start POASing so we can speculate with you