Should I be worried?

Jasmin • 21 , mother of a beautiful 2 year old little girl and now expecting another little baby 💕
Two weeks ago I went for an ultrasound because I was measuring 2 weeks smaller than what I was , today my doctor said they want to do another ultrasound in 2 weeks because my baby's stomach is showing that it's small but everything else is growing fine . I'm 36+4 today and they said if the baby's stomach still shows small they will have to induce me , should I be concerned that her stomach is small?