A thorough understanding of scanning techniques, implantation sites and the The other major contributor, ovum transmigration, can occur internally or externally.  An external migration occurs when an ovum is fertilized in the cul-de-sac,
Hello all, I am worried after having an early dating scan today. heartbeat on external scan so they did an internal and thank god they found a heartbeat. baby etc is really a scan not much older than 3-4wks after conception (5 – 6 wks preg).
An Early Pregnancy Scan (sometimes also called a Viability Scan or Dating Scan) from the first day of your last period (LMP) and not the date of conception. trans-abdominally (through your tummy) however an internal (vaginal) scan may