During pregnancy,what does the urine of a female contain?

$A$: The first sign of a growing foetus may be noticed by listening to the heart sound through the stethoscope.
$R$: By the end of the second month of pregnancy,the foetus develops limbs and digits.

High increase in $oxytocin$ level in a pregnant lady results in:

Which of the following is known as the anti-abortion hormone?

In mammals,the chorion and the allantois together form:

Which of the following groups of hormones are produced in women only during pregnancy?