Advice?

Ashley
I'm not sure what's going on but my tummy is  rock hard. I'm not constipated and I've been drinking a LOT of water and can't seem to stay hydrated! I always feel super thirsty but I don't have GD! 
My baby is already 5.5 lbs and I totally have been nesting! 
Is it maybe a sign that my body is getting ready for an early labor??