Eh mama, this is quite a tricky situation with the dating changes, I think you really need to sit down with your doctor to get clarity on what happened during those scans and why the dates kept shifting, especially since you ended up delivering on the 27.4 date your doctor wrote down. The UTI episode you had with the bleeding and hospital admission might have affected the scan readings or how they were interpreted, so best to ask your doctor directly about the medical reasons behind each change rather than assume. Since baby is already here now, the important thing is making sure both you and baby are doing well, but for your own peace of mind about the dating and delivery history, a proper conversation with your OB will help you understand what went on, boleh? Don't worry too much now, first-time mum jitters are normal, tapi the medical team will have the full picture of your pregnancy journey.