Fetuses do not come from the ovaries, a female's eggs come from the ovaries. Fetuses come from the uterus.
a fetus or embryo?
If you mean botany, then a fertilized plant ovary becomes fruit. In humans, a fertilized ovum (not the entire ovary) will likely become a fetus, and a baby if carried to full-term.
zygot, fetus formation
The uterus houses the fetus during pregnancy. The fallopian tubes are the site of fertilization, and carry the egg from the ovary to the uterus.
the organs grow larger
When a ready-to-be -fertilized egg drops out of your ovary. About two weeks after menstration.
leave
When he arrived I was ready to go is correct
"When he arrived I was ready to go" and "when he arrived I was ready to leave" are both correct
when mature egg cells leave the ovary
When an egg cell is about to leave the ovary, the process is called ovulation. During ovulation, a mature egg is released from the ovary and moves into the fallopian tube, where it may be fertilized by sperm. This typically happens around the middle of the menstrual cycle.
most of the time after 9 months