Anyone else keep measuring small???

I’m 29w2d and measured 27 and half weeks today! A few weeks back when I went to doctor at 24 weeks I measured at 22 weeks so we got a growth ultrasound done and my babygirl was measuring on track at 1 pound 7 ounces! My obgyn told me babygirl is in the 36th percentile so she’s smaller but not small enough to be concerned about her growth. Maybe I’m over thinking this? I mean maybe my second baby is just gonna be smaller than my son who weighed 8 pounds 8 ounces at delivery. I never measured small with him. Idk anyone else going through this? What are your thoughts? And yes I know every little babe is different but still. 🤷🏽‍♀️