I'm hoping I'm pregnant!?

I know I'll probably sound completely crazy and most likely I am but I'd really like to be pregnant. Today my period is one week late but I'm waiting at least another week to test because every once in a while my period does come a little late. The only hold up is my fiance had a vasectomy a few years back. I know it's only like one in a million cases where people get pregnant afterwards but it would save the money on having to get a reversal. And no, I'm not going through menopause... I'm only in my twenties. The only differences that I actually feel are bloating 24/7 and the past few days I've had some gas cramps. Other than that, I feel fine. Like I said, I know that more than likely my period will come but if anyone has any encouraging stories that relate to mine, I'd love to hear them! Thanks!