Don't feel pregnant grrr!

I'm so frustrated.. I don't have any pregnancy symptoms anymore (which is nice don't get me wrong) but I haven't felt the baby move yet and I feel like my bump is getting smaller. Anyone else deal with this? I'm 18 weeks tomorrow and really want to feel just some kind of flutters or something. I know with your first baby it can take longer to show and feel movement but it's still driving me crazy.