Small baby

I went to my growth scan yesterday and my little boy is measuring so little. He’s only in the 27th percentile. My doctor wasn’t concerned at all and didn’t even want to do a follow up scan, but I was kinda freaking out so she scheduled another one for 3 weeks away. I guess I’m just surprised because my husband and I are not small people. I’m 5’5” and my husband is 6’5”. Everyone jokes about how massive our baby was going to be, but he’s just not. I was so worried I cried my eyes out after we left the appt. Anyone else have small babies at this point? I feel like I only see people with their babies in the 70th and up percentile.