A high-profile trainer and life coach, Jillian Michaels starred on the reality TV show The Biggest Loser and has created her own fitness franchise.
A fetus is an unborn, developing baby. A fetus can be detected in the womb using ultrasound technology. Vaginal ultrasound probes may be inserted into the vagina during pregnancy to obtain an image of the uterus. The fetal stage comes after the 10th week of pregnancy.
The fetal stage of development tends to be taken as beginning at the gestational age of eleven weeks, i.e. nine weeks after fertilization. In biological terms, however, prenatal development is a continuum, with no clear defining feature distinguishing an embryo from a fetus.