So this is what I'd say to old pregnant me:
You Are NOT Huge
I know you feel like a Macy's Thanksgiving Day Parade float, but it's all baby. Ok, maybe it's not all baby, but the people that see you can't tell that easily. I know it's hard to believe, but they just see the "miracle of life" when they look at you. The baby took over your whole body (including arms and butt), as far as they're concerned. And anyway, you'll be amazed of how much water weight you'll lose once he/she's out.
You ARE Ready
I remember when I was about to walk down the aisle to get married, I panicked 'cause I couldn't believe I could've possibly planned enough. It just seemed impossible there was nothing left to do, except get married. I think we experience this kind of feeling all over again with motherhood - like there's nothing we can do that can be ever enough for your child. And that's true, there isn't. But it's not about things - YOU are enough.
Yes, You WILL Have a Pretty Baby
Am I the only one who secretly wondered if I was going to like the way my baby looked? I knew I'd love her even if she had 4 ears, but seeing her inherit mommy's stick-out ears made me feel like tearing up. Of course the rest of her is beyond gorgeous too, but what I mean is that it's so amazing to see a little person that is a piece of you that trust me, you'll fall in love with your baby. It's like the same thrill of falling in love with your significant other, only motherly.
DON'T Expect the Worst
My crazy pregnant brain thought that if I assumed the worst, then I'd be pleasantly surprised when something good happened, and not disappointed if it didn't. What's wrong with this thinking is that you never ever enjoy where you're at. You're constantly worried, in a "pre-partum" depression. And then you miss out on what I think is the most fun part of being pregnant - the thrill of anticipation. So go ahead, expect thet best - you already have something really good going on right now.