She hasn't moved!

I'm freaking out. I'm 38 weeks and I haven't felt my baby move in also 12 hours. Been having pelvic pain at times but that's it. I'm I over reacting or is this normal? I called doctor and they aren't worried but my doctor wasn't worried last time when I was 26 weeks and I started going into labor. And I listened to my gut and went in. And they were able to stop it. Help! Please!