This is what causes menstrual cramps. Then after 14 days, the hormonal level changes to prepare for the release of the next egg. The hormone levels of both estrogen and progesterone keep rising till about 4 days before the next period, and then, if fertilization has not taken place, they fall.
Daisy is the woman that Gatsby loves. She is nicks cousin and is married to Tom. When she was younger her and Gatsby were in love but Gatsby was not wealthy.
Daisy may be a married woman with a child, but she doesn't seem like she's managed to grow up very much. She can't live with the consequences of her actions, trying to (drunkenly) change her mind on the night before her wedding (4.120), and then being unable to make up her mind between Tom and Gatsby: I did love him once, she says, but I loved you too (7.266).