Anyone else have days where you don't feel pregnant?

Erica
I'm 16 weeks and 2 days due May 15th with my first baby and today I didn't feel pregnant at all.  My lower belly isn't as hard as the past few days or weeks for that matter and I'm not feeling very many if any of the pregnant symptoms.  I haven't had any bleeding so I'm sure everything is fine.. Just not feeling pregnant.  Anyone else have days like this?