In a water molecule, Your all of atoms have a slight positve chargeall of the atoms have a slight negative chargethe oxygen atom has a slight negative charge and the hydrogen atoms have a slight positive chargethe oxygen atom has a slight positive charge and the hydrogen atoms have a slight negative charge

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.