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*Menstruation (Cycle Day 1-7)
*Follicular Phase (CD 8-13)
*Ovulation (CD 14)
During ovulation cervical mucus reaches egg white stage(looks like egg whites, clear or pink tinged, slippery and stretchy)
*Luteal Phase (CD 15-28)
The follicle that the egg was released from is now called corpus luteum. It produces large amounts of progesterone. Progesterone helps to maintain the thick uterine lining and is essential for your babies early development. Progesterone is also what you can thank for PMS and pregnancy symptoms.
A woman is only fertile about 1 week each month, since sperm only lives 5 days and the egg 1. These days are the 4 days prior to ovulation, ovulation day and a couple days after ovulation(in case it is delayed).
Ovulation can be determined by:
*Monitoring cervical mucus.
*Using Ovulation Predictor Kits-OPKs detect the surge of LH which occurs 24-78 hours before ovulation. This is helpful is trying to conceive but not a good method if trying to prevent pregnancy.
*Charting (Basal Body Temperature)- This is the best method if trying to prevent pregnancy. After ovulation your BBT spikes and thus confirms that ovulation has taken place.
Knowledge of these fertile periods will help you to know when to avoid intercourse if trying to prevent pregnancy and the best times to conceive.
A good book for a more in depth look at this topic is Taking Charge of Your Fertility




