I had my first scan done at 5 weeks (dating scan) because I was unsure of dates. The next was at 16 weeks due to a complication, all up I had 6 full ultrasounds and about 10 mini scans (still an ultrasound, but done on a portable machine) and my son was born at 30 weeks, 15 scans in 14 weeks. With my 2nd I tried to stay away from them, having my first scan at 10 weeks (I thought I was 12wks) decided not to go back for the downs scan and then had another at 20 weeks (anatomy scan) and my last was at 26 weeks because of complications. He came at 34 weeks and I only had the 3 scans.