The Luteal Phase

Understanding Your Menstrual Cycle is critical to charting fertility and predicting ovulation. Read about your menstrual cycle - what happens pre and post ovulation - as well as what happens during ovulation.

The Luteal Phase

The Luteal Phase is the time period beginning with the day after ovulation and running through the remainder of your menstrual cycle (it ends the day before your next period). Typically, the duration of the luteal phase phase lasts between 10 and 16 days - and is generally consistent from cycle to cycle, averaging for most women at 14 days.

In the Trying to Conceive (TTC) Community, the luteal phase is also referred to as "DPO" - or days past ovulation. At the onset of the luteal phase, women's body temperature increases (Basal Body Temperature) in order to provide a fertile environment for the ovum - and the uterus undergoes physiological changes that support implantation and fetal development.

LH Luteal LH Surge

The Luteal Phase in the Menstrual Cycle

At the beginning of the menstrual cycle, the body begins to produce follicle stimulating hormone (FSH). FSH facilitates the formation of a follicle on one of the ovaries. The follicle contains and nurtures the egg. When a follicle has adequately matured, a surge of luteinizing hormone (LH) causes the follicle to burst and release the egg into the fallopian tube - ovulation. At this point, fertilization of the egg may take place.

Once the follicle expels the egg, the follicle is called a 'corpus luteum'. The corpus luteum is responsible for producing the hormone progesterone - and during the luteal phase, progesterone facilitates a thickening of the uterine lining and the development of blood vessels, which gives the embryo a place to attach. During the luteal phase, the corpus luteum will produce progesterone for approximately twelve days.

Return to: Understanding Your Menstrual Cycle

Read More About:
The Dynamics of Conception and Fertility:
What Happens During Ovulation?

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Considering that they assume most woman with a 28 day cycle have a luteal phase 14 days long, you can assume your luteal phase is approximately 15 or 16. Since your cycle is longer than the average 28 days (as mine is) your luteal phase would be as well.

iam 30yrs old women,we want 2 get pregnent,my last period11/09/2011 but since 01/09/2011 to 11/09/2011 there is a dark brown discharge (like spotting)is present i have any problem ?i can conceive?

ask ko lang last period ko july 18 then we have love making july 20 do u think i get pregnant

good day

i started my periods on the 22nd of june and ended on the 26th i want i know how do i calculate my ovulation date and also my latuel phase and the average cycle length

I usually start my period on the 7th of each month, this month I started on the 1st my cycle is every 30 days i usually bleed for 3 or 4 days tops! When is my luteal phase?

i was trying to calculate my luteal phase cause me and my husband is trying for a baby soon as af over with in 2 days. af lasts up to 5 days and i have an average 32 day cycle length. could anyone help me. thanks

I had sex 14 days after the start of my period and have been having acne problems bloating and bad gas as well as frequent urination ,migraines, stuffy nose and flu type symptoms has been 8 days since I had sex and its said to of been a really fertile time since im 18 ....could I be pregnant

After the secondary folicle releases the oocyte it is called the corpus hemorrhagicum, then the corpus luteum, the corpus albicans.

i have a question ive been married for a year and havent been using cycle is 31 day and i dont know how long Luteal Phase is some sites say im 14 days but that cant be cause and others say my cycle is 17 days can some one help me please

thank you

Clearly the last commenter needs to get laid and stop being so judgmental. Accidental pregnancies and abortions have been going on for thousands of years and are very important for those who need them. I believe God gives us the insight to know what's right for ourselves. If you do not believe in abortions or the morning after pill then you probably shouldn't get one...don't you think?

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