Getting worried

DM❣️ • 👶🏼👶🏼👧🏻👩‍❤️‍💋‍👨
Soo i am 18weeks & 2 days pregnant but i feel no movement yet 😐 should i be concern? With my first baby at 16wks pregnant i felt it & this time i dont feel anything, i dont even have a baby bump yet 😥. Should I be concerned?