I'll be 37 weeks tomorrow, and so far we'd declined all ultrasounds. Since we were planning a homebirth, we went in for what was supposed to be one quick ultrasound to check the position of the placenta yesterday. The perinatologist recommended by our midwife ended up doing measurements of the head, abdomen and femur, and told us that the abdomen and femur were measuring several weeks behind the head - so he's concerned about asymmetrical intrauterine growth restriction. Everything else he checked (amniotic fluid, blood flow through the cord, development of heart, bladder, etc) were normal. He wants us doing nonstress tests every three days and come in for another u/s in 2 weeks - if the baby hasn't grown, he (and the midwife) will want to induce.
We passed the first nonstress test last night.
The perinatologist was really confusing in interpreting the results. He kept pointing out that neither my husband nor I are big (and we also moved to semi-high altitude during the pregnancy) so "perhaps it's just a small baby". However, *every* time he said that, he followed it up with "but the measurements shouldn't be so asymmetric". Not really sure what to do with that.
Anyway, I'm freaking out, and I guess looking for some information about whether 3rd trimester u/s length measurements are known to be as inaccurate as u/s weight estimates. Isn't the weight estimate based on the length measurements somehow?
Did anyone have similar measurements in the 3rd trimester?