Not feeling movement 😩

Hello, I'm stressing myself out and need some positive vibes thrown at me! I'm on my third pregnancy ( 1 full term, 1 miscarriage), I'm currently 18 weeks and  3 days and haven't felt any movement yet, all I see is people feeling baby at 13 w - 17 w with second pregnancies. I'm feeling negative about baby's health, anyone in the same boat???