Baby measuring small

Im 36 weeks today and my baby is measuring about 33 weeks, and she only weighs 4 lbs 11 oz, I have to get another ultrasound before next wednesday at the high risk clinic, im so scared, I lost about 6 oz in a week, I hope my baby girl is okay, I dont know what I would do if something happened to her, Im just asking for some prayers ladies. Thank you all.