The fetus is what they call the unborn baby after 3 months of growing in the uterus. At that time it is now considered an unborn child or fetus instead of a blacocyst or mass growth of cells.
When you or the fetus have a condition that can make you more likely to lose the fetus or your life. When the pregnancy is potentially bad for you.
The eyelashes of a fetus develop around week 22 of pregnancy.
the 21st week
One can tell how far along they are in pregnancy by having an ultrasound. An ultrasound measures the fetus and then compare that measurement to what an average fetus is. If it matches to a 3 week fetus it means that one is 3 weeks into pregnancy.
uterus
The fetus can not grow there and has to be removed.
An Heterotopic pregnancy is a one in thirty three thousand chance of conceiving twins all be it one fetus is in the womb and the other fetus is ectopic.
The death of an embryo or fetus in the first 20 weeks of pregnancy is called a spontaneous abortion.
the uterus
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 fetus is in the uterus where it gets nourishment from the placenta via the umbilical cord.
If you mean that shouting at the fetus or around the fetus or belly during the pregnancy can hurt it, the answer is no. And they can't hear until around week 20.