Dlynn -- I got this today too, my kids' first day of school--every one I saw was surprised that I "haven't had that baby yet?!"
When your belly hangs out the bottom of every maternity top you own.
When instead of being all excited and joyous when you feel the baby move, you start to find yourself saying, "OW!!!! I don't know what the !@#$%$ you are doing in there, but stop it!"
When you have to strategically plan getting off the couch or going up or down the stairs, coz it's an ordeal. Usually accompanied by various grunting noises.
When people ask you how you are, your reply is, "Ugh...."
Everything. And everyone. Annoys. The crap out of you.
You look at the expiry date on a jug of milk and wonder if it will expire before or after you have your baby. I did this today. And I bought the one with the soonest expiry date, and we're in a race to beat the clock.