Week 7 – Gestational Age / Week 5 – Fetal Age
** Gestational age is the age of the pregnancy from the last normal menstrual period (LMP) and fetal age is the actual age of the growing baby.
At 7 weeks gestation, every essential organ has begun to form in the embryo's tiny body even though it still weighs less than an aspirin. The hair and nipple follicles are forming, and the eyelids and tongue have begun formation. The elbows and toes are more visible as the trunk begins to straighten out.
Source: American Pregnancy Association