I dont feel pregnant

Rachel
This is baby #4 for us and I never feel pregnant for real until about 16-18 weeks when I've heard the baby's heartbeat several times, seen the baby move, know the sex, feel baby move and am showing. Idk why. I've never suffered a miscarriage but I always stress about it until I hit the point where everything seems real. Anyone else feel this way? I feel like such a freak!