Please tell me everything is going to be ok

Had my Dr appointment today and she ran some text and did an ultrasound because she is stay measuring very small...I'm 36 weeks today and she is in the 2% just hit 4 pounds. Her activity has decreased...I go in everyday for a stress test and have to get induce next wed at 37 weeks or before because she is not growing fast....everything else looks good....why is my baby girl not growing?