Emotional FTM- I won't be making it to 40wks

Tei
At my anatomy scan at 20 +6 weeks I found out that I had a marginal umbilical cord. I was told that it could affect the weight of the baby. At this time she was 13 oz. my doctor informed me that they would keep an eye on her growth by doing monthly ultrasounds. My next ultrasound was at 24 weeks and baby was 1 pound 11oz in the 44th percentile so apparently everything was looking good. Over the next few weeks I did my GB test and had a colposcopy so and my fundal height was on track so I hadn't received any ultrasounds. At my 30 week appt I had a colposcopy done and was told I was slightly anemic. She then mentioned scheduling an ultrasound for 36 weeks and I mentioned I hadn't had one for a while so she scheduled one for today at 32 + 1. Thank God she did. Baby is measuring 3 pound 11 oz and has fallen behind in growth. Her overall percentile is 13% but her abdomen is measuring in the 6th percentile due to placental and umbilical issues. I now have to have NST twice a week with an ultrasound once a week. She said no matter what I would be having the baby at 39 weeks unless her size and NST results aren't optimal and then I could be having her sooner. I have anxiety so my stress is high and this is our rainbow baby. I'm so scared and nervous as a FTM and I just want her here healthy above all else. Please keep us uplifted in prayer and feel free to share if you have similar stories.