I'm 32 weeks and I've had one at every single visit, but I've also had an u/s a every visit. I hope the insurance is covering this.
I don't know why I always get one. I live in Germany. In the beginning I had some problems with the pregnancy, so maybe that's why she does it or maybe she's just trying to get all she can from the insurance. No idea. I guess it's different in every country. I thought it was 36 weeks in the States.