Clomid and monitoring baby heart beat

OurAdventure

Hi All,
My wife became pregnant from her IUI in September and is due in a few weeks. Our OB has decided to send her for weekly biophysical profiles and nonstress tests. When asked why, he said because she had an IUI/Clomid pregnancy and he wants to monitor the baby's heart rate. Has anyone had similar reports from the doctor?

Thanks,
OA