Belly measuring small

Tori • 2 kids. Married to the love of my life 💕

I’m 37+3 and I had my normal appointment today. After she measured my belly she asked when my last ultrasound was which was at 33 weeks cause my belly had been measuring small then too, and so she wrote another ultrasound order because my belly is measuring the same as it was then so it’s pretty much 7 weeks behind. I’m a little worried, anyone else’s belly been measuring so far behind and everything be okay? My son was always measuring big so I’m not used to this!