Feeling like I'm way too big!!😣

I'm currently 11 weeks/2days with my second child. My first is 3 and when I was pregnant with her, I didn't start showing until 18-20 weeks. I feel like this time around I am WAY bigger, even though I started this pregnancy 10 lbs lighter than my first and I have actually lost 3 lbs due to major nausea. Even my mom commented on how she's surprised by how big I am already. What do you guys think?! It makes me nervous...