Accuracy 1st trimester ultrasound dating parker posey dating 2016
The first trimester is defined as the first 13 weeks of pregnancy following the last normal menstrual period (some authors refer to early pregnancy as 0-10 weeks).
It can be divided into a number of phases, each of which has typical clinical issues.
the baby and its heart beat can be detected relatively easily with trans-abdominal and trans-vaginal examination.
Even average babies can differ by up to 2 to 3 "weeks of growth";.