OPINIONS needed: Tiny Toddler - Worried Mama

Hello all - I hope all is well 😁. My youngest just turned 2 two weeks ago, and most people think he is 10 months old to a year!!! Let me just say that I am petite, and my husband is on the short side. I have two other kids and although they are somewhat petite, they looked their age still (I have a 8yo daughter, and a just turned 3yo son).

Has anyone else had this issue (or know someone who has)? I am a worry wart by nature, but still -- it bothers me each time someone is so shocked to hear he just turned 2.

Any opinions or advice is welcome.

FYI: I just moved, and my new pediatrician hasn't yet received the paperwork from his previous doc...so I cant ask them quite yet (Ive tried). The previous doc used to always say he was on a growth curb and he is healthy and growing...they weren't worried. Still, I do. HELP!!!!

Hes not too skinny as you can see -- he is just small. His last weigh in he weighed about 18lbs.