When are you most fertile?

Ovulation usually occurs about 14 days after your period, but if your cycle is longer or shorter than 28 days your fertile period will be later or earlier accordingly.

During your monthly cycle the body goes through various changes to prepare for getting pregnant.

The cycle is mostly controlled by the hormones oestrogen, progesterone, follicle –stimulating hormone (FSH), and luteinizing hormone (LH). A peak in LH triggers ovulation.

Your body temperature drops and then rises just before ovulation. You are fertile for one day before the temperature drops, and for one day after it remains elevated.

Your cervical secretions go through a cycle of changes too. As you approach your fertile period the secretions increase and become clearer, stretchy, and slippery ready to receive sperm for getting pregnant.

At ovulation one follicle ruptures, releases its egg, then becomes a structure called the corpus luteum. This produces the hormone progesterone, which is essential for the development of an embryo. If the egg is not fertilized, however, the corupus luteum shrinks.

After ovulation, under the influence of oestrogen and progesterone, the endometrium (lining of the uterus) becomes thick and spongy to receive the egg. If the egg isn’t fertilized, the corpus dies and the endometrium is shed at your next menstrual period.

Here is an approximate fertility guide based on a 28-day cycle to help you get pregnant. There can be a slight chance of getting pregnant throughout your cycle as men's sperm can live inside a woman for as long as seven days.

Day 1-5

Development Menstrual period
Hormone levels Normal, FSH slight increase
Body temperature Normal
Cervical Secretions Period (usually no secretions)

Day 6-9

Development Relatively infertile phase
Hormone levels Normal, Oestrogen begins to rise, FSH dips back
Body temperature Normal
Cervical Secretions Dry, no secretions

Day 10 - 12

Development Relatively Fertile
Hormone levels Oestrogen rises steadily
Body temperature Begins to drop
Cervical Secretions Moist, sticky, white, cloudy

Day 13-15

Development FERTILE
Hormone levels Strong rise in LH, FSH
Body temperature Drops and rises sharply
Cervical Secretions Wet, slippery, stretchy, clear
Follicle/ Egg Peak fertile period- the egg is released from the ovary.

Day 16-19

Development Relatively Fertile
Hormone levels LH, FSH drops back to normal, oestrogen levels out, progesterone rises
Body temperature Remains slightly higher than normal
Cervical Secretions Moist, sticky, white, cloudy

Day 20-28

Development Infertile phase
Hormone levels Oestrogen and Progesterone stay fairly high, eventually drop.
Body temperature Steadily drops back to normal
Cervical Secretions Dry, few secretions

Taken from the book: Conception, pregnancy and birth by Miriam Stoppard

Babyexpert.com 27/06/2013 05:42:00
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6 comments on this
Rubys mummy
Silver member

05/08/2013 at 21:20

Please help???
I've never tested my cervix but have done tonight and it was hard to reach as it is very high??? What does this mean as I have has pregnancy symptoms for the past week?
Patrice Lowe
Silver member

17/08/2013 at 02:30

If you want to get pregnant then try for the ovulation kit available in the market.
You observe your secretion or you measure your body temperature.A rise in temperature indicates you are ready .The most easiest way according to me is the 14th day.
Silver member

17/08/2013 at 08:16

Hi guys please I need some help, I had my last fake period whilst I was on the yasmin pill on the 27th of july, 7th aug I've been missing a few pills and decided we wanted to conceive so I stopped completely on the 13th which was Tuesday, but had my withdrawal bleed from Monday the 12th I'm still having a bleed 6 days on.. It's never got heavy that I need a pad or anything just the first couple of days It was brown scanty blood with discharge & the last day or 2, very dark red/brown discharge, it's only when I wipe going to the toilet (sorry tmi) .. So anyway yesterday & the day before I also had a lot of clear thick stretchy discharge mixed with the other discharge I'm having, I took 3 ovulating tests yesterday 4pm positive, 8pm the test line had faded and 10pm it had faded more again? :s I'm really confused is it Evan possible to ovulate on a withdrawal bleed?! .. I also missed out I finished my bc pack completely on week 3 :) .. Any advice/help will be very grateful thanks
Angel 3
Silver member

03/04/2014 at 19:00


I got of my monthly on the 28th of march and I have sex on the 1st of April and the 2nd of April, I had this EWCM Than some real stretchy mucus.... What is going on??? Could I be pregnant???
Halle Jeane
Silver member

15/08/2014 at 07:37

Normally, the cycle is a 28 day cycle. During the 14th day after a period, the ovum is released. This process is called ovulation and the days 12 to 16 days after a period are said to be a womans most fertile period. The first day of a period is considered as day 1. Usually on day 14, the egg is released and is waiting for the sperm to fertilize it. The egg has a lifespan of just 12 to 24 hours whereas a sperm can last for about 72 hours in a woman. Sex on day 12 and day 16 is important as it is the time that the woman has the highest chances for pregnancy.
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