Welcome to HCM.
There are more chances of congenital anomalies and genetic disorder at 40 but don't worry..it can be rule out during pregnancy
Go for complete bood investigations(Triple marker) to rule out down's syndrom,Spina bifida
,neural tube defect
4 D sonography
is also helpful to rule out foetal growth.
Consult good experienced Ob/Gynecologist for better management.