I tested low on my PAPP-A levels during the first trimester blood screening (when they also test hcg). The low levels triggered a really high probability of down's syndrome, and we were lucky enough to do the Verifi test and determine that we are negative for down's. Now that I'm further along, I guess the latest trouble with the low PAPP-A is that it is supposed to be correlated with 'failure to grow,' and one of my providers wants to do extra ultrasounds at 28 and 36 weeks to check on the baby's growth. Has anyone ever encountered this and if so, did you go along with the extra ultrasounds? I am not worried about the ultrasounds as much as I am worried that this provider is slowly pushing us into a more and more monitored birth process-- we hope to have a homebirth with another provider, but this is with my HMO who sees me and would be the provider if we did have to have a hospital birth.
Also, the HMO wants to give me a Tdap/ pertussis vaccination booster at 28 weeks to 'transfer immunity to the baby.' I know there are a lot of different opinions and strategies for vaccination out there but is anyone else trying to make up their minds on this one? Is this common?