Good day) The ultrasound report stated uneven blood flow in the umbili…

Good day) The ultrasound report stated uneven blood flow in the umbilical cord and the fetus's development does not match the due date. They are now scheduling an additional 1.5 weeks. An ultrasound check is scheduled for two weeks from today. However, I am already quite anxious, I have been seeing my gynecologist, but she said little more than we will do an ultrasound and see what happens. But this uneven blood flow is really worrying me. Has anyone experienced something like this? Can someone please calm me down?