Frustrating

So I've decided that early second trimester must be the most frustrating part of pregnancy. I know I'm lucky in that I didn't have morning sickness or any other major discomforts, so maybe this isn't true for everyone, but for me right now at nearly 16 weeks is the worst part (so far). I'm not showing yet, I can't feel the baby move... so I have no idea whether or not the baby is okay. It's hard to believe I have my big ultrasound in just a little over 2 weeks, and I don't even have a baby bump yet. I just have to have faith that everything is fine for now, as Steve keeps trying to reassure me. I do have a regular appointment on Monday, so at least I will know then if everything is progressing normally. I'm just so terrified of missed miscarriage!