Gestational Age Week 7 (Fetal Age: 5 weeks)
Typically, a heartbeat can be found and viability can be determined between 6 1/2 and 7 weeks. At 6-7 weeks, a heartbeat should be between 90 and 110 beats per minute. A healthy pregnancy can be confirmed by the presence of an embryonic heartbeat. Once a heartbeat is detected, the chance of the pregnancy continuing ranges from 70-90% dependent on what type of ultrasound is used It is possible for an embryo to be healthy and not exhibit a heartbeat if it is smaller than 5mm CRL, but a follow-up scan in 5-7 days should reveal cardiac activity.
The gestational sac and fetal pole (if visible) will be measured to determine what kind of development should be seen if your doctor is worried about miscarriage, blighted ovum, or ectopic pregnancy. According to the rule, if the gestational sac measures
A follow-up scan should be performed in 3-5 days if the fetal pole is too small to accurately measure. To rule out the possibility of an ectopic pregnancy, additional testing should be done if the fetal pole is absent.
Gestational Age Week 1 & 2 (Fetal Age: Conception)
The menstrual cycle has just ended, and your body is preparing for ovulation at this time. Most women experience ovulation between 11 and 21 days after the first day of their last period. A few hundred million sperms are released into the vagina during sexual contact. Sperm will move from the testicles to the fallopian tubes through the cervix.
When conception occurs, the sperm will enter the egg and produce a zygote, which is the precursor to a new human being and contains a single set of 46 chromosomes. The fertilized egg, known as a morula, travels through the fallopian tube for a few days before entering the uterus and dividing into cells (during this dividing process, many chromosomal abnormalities occur).
The morula develops into a blastocyst and ultimately lodges in the uterus. The blastocyst will embed into the uterine lining and start the embryonic stage between days 6 and 12 following conception.
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