Wishful Thinking or Early Signs?

I'm taking 2 pregnancy tests a day even though I know it is way too early.  But I can't stop myself!  I think I have whitish-yellowish spots on my nipples I remember from previous pregnancies, cramping 4 days post ovulation and I've convinced myself I'm ever so slightly nauseated.  I kind of don't care if I'm fooling myself because it feels really good to be hopeful.  What early signs are you looking for?