5am and i can't sleep

I haven't done a post like this in a very long time, today is 16 dpo and my wife is due her period today but we both feel more optimistic than we have done for a long time about the possibility of her being pregnant. 

Basically she's had early spotting, 2 days earlier in her cycle than it has EVER been and it was very light. We're hoping that it was implantation bleeding but we wont be sure until we get a positive test result and that may be another week away yet unless we decide to test earlier (a decision i'm leaving completely up to her). 

I don't know what to think. I don't want to get my hopes up and have them dashed again, i don't want to be too pessimistic, i'm worried in case she is and we get the same thing happen as last time again. 

But at the same time i'm excited....

This could be it!