39 weeks and baby is moving less?

Our little baby is usually really active throughout the day and today she seems to be a lot less active. I am currently laying on my side, I had two cookies (which makes me feel bad since I have GD 😭), and baby is moving. Surpassed the 10 kicks/movement in less than 20 minutes, but she feels sooo sluggish. Is this normal? Is it due to less room? I don’t need to call in since she made the 10 kicks so fast correct? I have an appointment tomorrow. I’m a FTM so you know lol