Baby showing in the 1 percentile for growth- 21+5 weeks. SO nervous any comments welcomed

Amy

I had an ultrasound today. I am 22 weeks Thursday. She is only weighing 9oz and should be closer to a pound. The doctor explained it is because of my placenta, it is not providing the adequate nutrition etc. I go back in 2 weeks to see if she has gained any weight. I am practically on bed rest until then. I’m a wreck and just want her to be strong & healthy. Has any one gone or is going through this or similar? Any words help!