Bump got smaller

I'm a FTM so I'm never sure what's normal or not. I've been small most of my pregnancy and suddenly got a belly around 6 1/2 months. Now I'm 34w2d and I woke up with a smaller bumb. My belly button which was sticking out is completely back inside and my stomach isn't as hard as it usually is. I've felt her move a few times. I guess what I'm asking is should I freak out or is this normal?