I get a little scan every 4 weeks when I see the consultant, first baby I am 46 and not the smallest person in the world.. I had a proper detailed twice at 7 and 9 weeks as I had a little bleeding. Then a big scan at 20 weeks and then as I said a little one every 4 weeks. I am having a proper scan tomorrow I’m 29 weeks and then I guess they see how frequently. C section booked for 38 plus 4 days so I suspect that there will be a few scans before then.. the one every 4 weeks is a listen to the heart beat and a little measure. At the last scan baby was measuring a week ahead so keen to see where they are tomorrow. I had my original due date adjusted by a week very early on so looks like baby is measuring to that date..