22.02.2014

Ovulation and conception pregnancy

There are only a few days (typically 6) each cycle when you can get pregnant, the days leading up to and including the day of ovulation.
Ovulation is the name of the process that happens once in every menstrual cycle when hormone changes trigger an ovary to release an egg.
As you approach ovulation, your body produces increasing amounts of a hormone called estrogen, which causes the lining of your uterus to thicken and helps create a sperm friendly environment.
Ovulation normally occurs 24 to 36 hours after the LH surge, which is why the LH surge is a good predictor for peak fertility. The total ‘fertility window’, taking into account the lifetime of both the sperm and the egg, is about 6 days. Your ‘fertility window’ is the period of about 6 days during your menstrual cycle when it is possible to become pregnant from unprotected sex – hear more about how this works in the video from Professor Bill Ledger. The graph below shows the estimated likelihood of conception on the day of ovulation and the 5 days before. As we said above, ovulation usually happens 12-16 days BEFORE your next period starts, so the timing of ovulation depends on your menstrual cycle length.
If you’d like to have a more in-depth look at what happens inside your body during your menstrual cycle, click through to our Cycle and Ovulation page. Receive exclusive discounts on our most popular products for trying-to-conceive, pregnant, or breastfeeding couples.
Please ALSO send me Get Pregnant Now: the essential, 5-part daily guide on the fundamentals of conceiving quickly.
I had read about debates between first morning urine (FMU) and second morning urine (SMU) on the forums. So of course my first reaction when I see a pink smudge is to take a photo and email it to Caitlin! She said she could – just a little – but that I should go take an expensive test because these cheap strips are so hard to see and can sometimes produce evaporation lines and false smudges. This was the point in the day that my breath caught in my throat and I knew: I was pregnant. I hate that your posts are all pre-written and spaced out…because I know you have them all ready for me to read, but you’re making me wait!
I took 5 pregnancy tests (and all had two bright pink lines) before I even let myself get excited…haha.
With my son I didn’t bother to take a test until 13dpo (and it was immediately positive), but I was clearly feeling food aversions and nausea at 9dpo. I got a line like you show on the First Response test my first month trying – and got my period later that same day.
I do just want to make sure that other ladies reading this blog understand that simply tracking ovulation and timing intercourse does *not* ensure a speedy pregnancy. WOW I’m surprised at all of the work, research, charting, taking tempatures, testing, etc that you did since you got pregnant SO quickly!!!


I know you wrote this a long time ago now, but I’m just beginning to chart and measure everything in our attempt to get pregnant. Conception – that magic moment when a sperm cell and an egg cell melt together to create the beginnings of a new human being – can only happen naturally right after ovulation.
However, because sperm cells can survive inside your body for several days and still be able to fertilize the egg, it is possible to get pregnant from intercourse that took place a few days before your ovulation and the actual moment of conception. Your chances of becoming pregnant are highest when you have intercourse close to ovulation, but unfortunately, perfect timing isn’t always possible. The fertile window, or your fertile period, is made up of those days in your cycle when pregnancy is possible. In a textbook 28-day cycle with ovulation on cycle day 14, the fertile window would therefore span the period from day 9 to day 14.
That said, if the reported intercourse patterns in the temperature charts were mostly accurate, 6% of the pregnancies resulted from intercourse three or more days before ovulation. Several teams of medical researchers have studied the relationship between intercourse timing and chances of conception. Day 0 (the “reference day”) in most cases corresponds to the last day with low basal body temperatures, which is the most likely ovulation day. In conclusion: If your last intercourse in this cycle was 3, 4 or 5 days before ovulation, don’t give up hope quite yet – but don’t get your hopes up too much either. All information on this website is published in good faith and for general information purposes only. The so-called LH surge causes the release of the mature egg from the ovary - this is ovulation.
If it isn’t fertilised the lining of the womb is shed (the egg is lost with it) and your period begins.
It is true that the average menstrual cycle length is 28 days, but none of us are ‘average’ and cycle lengths vary from woman to woman and cycle to cycle - in fact 46% of menstrual cycles vary by 7 or more days[ii]. I lie in bed for a while and tell myself not to get discouraged if the test is negative because most tests are not positive until 13-15 dpo. After multiple squeals – both in my house and in Caitlin’s G-chat window – I couldn’t stop smiling.
Maybe her husband’s last name will be super common and simple and she chooses to take that. As infuriating as it is to hear, the facts show that fertility diminishes after the age of 30 and rapidly diminishes after 35. When a mature egg cell is released from one of your ovaries, it must be fertilized within 24 hours (perhaps even less), or the egg dies and your chances of pregnancy are lost in that menstrual cycle. In a study of day-specific probabilities of pregnancy from 2000, published in Demographic Research, the Italian researchers B.
Day -5 therefore means five days before ovulation, -4 means four days before ovulation and so forth.


But some studies indicate chances as high as 14-16% from intercourse four days before ovulation, and up to 10% five days before ovulation. Your and your partner’s age, your reproductive and general health, intercourse frequency and many other factors may give you significantly better or poorer odds than these averages.
We have put together information which will help you understand your fertility, the ovulation process and how this fits within your menstrual cycle as a whole. So to get pregnant, it’s important to have intercourse on your fertile days and if you want to find out when you’re most fertile, it’s important to get to know your own body and your own personal menstrual cycle. In the trying-to-conceive world, many women go to every extreme to try to see a faint line on a test 8 days past ovulation. Getting pregnant for the first time was still a huge leap forward: Matt and I could biologically conceive.
Although not ready for a baby quite yet, my husband and I would like to try in a couple of years and this is getting me so excited for that process! I had heard that a line, no matter how faint, meant pregnant and when mine was wrong I thought maybe it was too faint but it looked just like yours. Even if you’re trying and hoping, I am sure knowing will be surreal and amazing in so many ways. I did it because I wanted to and it was an incredible science learning experiment to getting a better idea of what was going on. Even intercourse as much as six or seven days before ovulation was reported to have resulted in pregnancy! And in future cycles, having intercourse closer to ovulation will greatly increase your chances of getting pregnant. I had a weird moment when I thought i might be–I was crying for no reason and am not really a cryer.
I would think the 20% would be just random pregnancies by chance and not including the ones that are more planned, but I really don’t know.
Since one women had gotten a positive that early (likely a miscalculated ovulation), it gives hope to the rest and crazy “POAS addicts” are born. There was a good chance that the tiny ball of cells inside of me would grow into my first baby, and the thought made me love it already.
I am not claiming to be exempt from this – I definitely got a little crazy at times examining tests in 10 different lights, and yes, even Photoshopping them to see if a line appeared under dark exposure and high contrast.



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