Seems like there a few high risk pregnancies here.
I'm high risk because I have a unicornuate uterus (essentially half a uterus). My risk is miscarriage in the first trimester and the baby running out of room to grow and going into premature labour.
Last time I had OB appointments with a Scan every 4-5 weeks and proper sonographer scans inbetween each OB appointment... So almost a scan every 2 weeks.
It's does get inconvenient and costly, but at least u get regular reassurance.