Ovulation occurs at day 14 in the cycle., A spike in LH at day 14 in the cycle. This triggers the release of an egg., A gradual increase in Oestrogen inhibits FSH production starts to thicken the uterus lining., FSH increase over the first 3-5 days of the cycle, causes an egg to start maturing., After ovulation the lining of the uterus is at its thickest, ready to receive a fertilized egg., Menstruation begins at day 1 in the cycle, the lining of the uterus begins shedding., a second peak in oestrogen maintains the uterus lining after ovualtion., at the end of the cycle oestrogen levels decline to allow menstruation to begin., An egg in the ovary starts to mature due to FSH increase..

Menstrual Cycle Graphs

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