I get the hard as a rock tummy all the time. Mine will last for an hour or more sometimes. My doc said it was braxton hicks, but I agree with Coppertop too it may be your little girl. I have been getting some mild cramping with mine so I believe most of mine is braxton hicks.
Anyhow you are most definitely not alone! Do you have pain with your hard tummy? Last night I almost called the doc because of my continuous cramping.
I know exactly what you mean by getting bigger everytime you look in the mirror!! I can't believe how much I have grown in the past month. We just took a picture on Sunday of my belly for my baby book.
Have a great day!!
It's a girl!!!!
Noelle Marie due 8/1