Not moving

Onnilee • Adalynne Grace 09/11/2016 🎀💕👑 Tinsley Saylah Joy 04/24/2019 💜🌸👑 Evangeline Elizabeth due 04/02/2021
I'll be 26 weeks tomorrow. For the past three days my little one has not been moving like she use to. She use to kick all day everyday and now she only kicks at night when I lay on my back. Should I be concerned?