19 weeks and movement

Jaime • I am 22 and my husband and I are expecting our first child. We are to welcome in a little boy in November.
I am 19 weeks today and I've noticed in the past week my baby boy has created his own schedule!!! He wakes up early morning and kicks around sleeps till mid afternoon then wakes up and wakes up again late at night! It is so weird! Has anyone else noticed this with their baby?