28 Weeks Pregnant Will It Hurt My Baby if I Lay in Bed All Day

When are you lot more than probable to conceive?

Nosotros're talking about the 'fertile window' – the days in a woman'south menstrual cycle when pregnancy is possible. The 'fertile window' depends on the length of the menstrual cycle, which varies amongst women.

The 'fertile window' is the twenty-four hour period an egg is released from the ovary (ovulation) and the five days beforehand. Having sexual practice (intercourse) during this fourth dimension gives you the best gamble of getting pregnant.

Ovulation Calculator

• What is an ovulation figurer and how does it help you get pregnant?

  This ovulation calculator or ovulation calendar can help you piece of work out your nearly fertile time. These are the days y'all are most likely to get pregnant.

  It tin as well estimate your due date if you do become pregnant during your next fertile days.

  Others ways to help you piece of work out when you're ovulating:

• Detect changes in vaginal mucus

  A few days before ovulation, you may discover your vaginal mucus becomes clear, slick and slippery, and feels a bit like egg white.

  This is a sign that ovulation is nigh to happen. It's the all-time time to have sex activity, as sperm travel more easily in this kind of fungus.

• Use an ovulation predictor kit

  You tin can utilise a predictor kit from a supermarket or pharmacy, to exam your urine for signs of ovulation. If you lot beginning testing your urine a few days earlier the solar day y'all next expect to ovulate, a positive result ways you are going to ovulate within the next 24 to 36 hours (one to two days).

• Facts about timing

  Ovulation is when a mature egg is released from the ovary. The egg then moves down the fallopian tube where it can be fertilised. If sperm are in the fallopian tube when the egg is released, there is a good take chances that the egg will be fertilised, creating an embryo, which can grow into a baby.

  Pregnancy is technically only possible if you have sex during the five days before ovulation or on the day of ovulation. But the most fertile days are the three days leading upwards to and including ovulation. Having sex during this time gives you the best adventure of getting pregnant.

  Past 12-24 hours after ovulation, a woman is no longer able to get pregnant during that menstrual cycle because the egg is no longer in the fallopian tube.

  There'south nearly no chance of getting pregnant if yous have sex before or subsequently the fertile window (merely if you're not trying to get meaning, don't rely on this – contraception is your best option!).

• How to know when you're ovulating

  Knowing when yous ovulate can assistance you program for sexual practice at the correct time and improve your take chances of getting pregnant.  You can keep track of your menstrual cycles on a nautical chart, in a diary, or on a complimentary period-tracker app on your smartphone.

  To piece of work out the length of your menstrual wheel, record the start twenty-four hours y'all starting time bleeding (commencement 24-hour interval of your menstruation). This is mean solar day one. The last day of your bike is the twenty-four hours before your next period begins.

• What is a 'menstrual wheel' and a 'catamenia'?

  Some people recall the 'menstrual cycle' and a 'menstruation' are the aforementioned thing.

  A period is when you bleed (or menstruate).

  A menstrual cycle starts on the 24-hour interval when a period starts (solar day 1) and ends the day before the next menses. A cycle's length is considered normal if information technology's betwixt 21 and 35 days. They can vary between women and from one cycle to the side by side.

• Working out your 'average' menstrual cycle length

  If your menstrual cycles are unlike lengths (near women'south cycles are) yous can work out your boilerplate cycle length.

  The number of days in a woman's menstrual bike can vary month to month. Periods are not always regular. It tin can exist useful to work out an 'average' cycle length, based on the length of 3 menstrual cycles, to approximate when you lot're well-nigh likely to be ovulating.

  If you add the number of days in three cycles and carve up the total number by three, it gives you your boilerplate cycle length.

  Case

  Sarah tracked her last three menstrual cycles by counting the time from the kickoff solar day of 1 period, to the 24-hour interval before the side by side period.

  Wheel 1 was 28 days; Cycle 2 was 32 days; Bike 3 was 27 days

  28 + 32 + 27 = 87

  87 divided past iii = 29

  And then the average length of Sarah'due south menstrual cycles is 29 days.

• Working out your most fertile days

  When you lot know your average menstrual bike length, you tin work out when you ovulate.

  Ovulation happens nearly xiv days before your menses starts.

  • If your average menstrual cycle is 28 days, you ovulate around day 14, and your most fertile days are days 12, 13 and 14.
  • If your average menstrual cycle is 35 days ovulation happens around twenty-four hour period 21 and your most fertile days are days 19,xx and 21.
  • If you take shorter cycles, say 21 days, ovulation happens around day seven and your most fertile days are days 5, 6 and seven.

  Your nigh fertile days are the 3 days leading up to and including the 24-hour interval of ovulation.

  Some women have very irregular cycles or observe it difficult to work out an average wheel length. This can make information technology hard to work out when ovulation happens. If it's all too difficult, having sex activity every two-3 days covers all bases and improves your chance of getting meaning.

Myth busting

MYTH

A woman tin can get pregnant any time of the month.

FACT

A woman tin can only get significant on a few days during her menstrual cycle.

Why?

Because eggs and sperm only alive for a curt fourth dimension:

• Sperm live for around five days.
• Eggs can only exist fertilised for around 24 hours (one day) after beingness released from the ovary.

Eggs and sperm need to come together at the right time for fecundation to happen to create an embryo.

Getting the timing right

If y'all're trying to get pregnant, timing is everything. Dr Karin Hammarberg explains how to work out when you are ovulating and the correct time to have sexual activity to better your chance of pregnancy.

• What are the chances?

  Having sex as close as possible to the time of ovulation increases the take chances of pregnancy.

  If a woman has sex activity six or more days earlier she ovulates, the chance she volition get significant is almost zippo.

  If she has sexual practice 5 days earlier she ovulates, her probability of pregnancy is about ten per centum.

  If she has sex on the twenty-four hour period of ovulation, or the two days before, the chance of getting pregnant is effectually 30 percent.

  These are average figures and depend on a adult female'due south age.

When does preconception health begin?

Professor Sarah Robertson, Director of Robinson Research Plant, Academy of Adelaide, highlights the primal time before pregnancy that your health is most of import to ensure your child has the all-time start to life.

How to know you are ovulating

Kerry Hampton, a registered nurse and fertility specialist, discusses the importance of fertility awareness, and how to determine your fertile window to ameliorate your chances of conceiving.

• References
  • American Society for Reproductive Medicine, Optimizing natural fertility, https://www.reproductivefacts.org/news-and-publications/patient-fact-sheets-and-booklets/documents/fact-sheets-and-info-booklets/optimizing-natural-fertility/
  • Berglund Scherwitzl, et al. (2015). Identification and prediction of the fertile window using Natural Cycles. The European Journal of Contraception and Reproductive Wellness Intendance, 20(5), 403-408. doi:10.3109/13625187.2014.988210
  • Ecochard, R., et al. (2015). Cocky-identification of the clinical fertile window and the ovulation period. Fertility and Sterility, 103(five), 1319-1325.e1313. doi: http://dx.doi.org/ten.1016/j.fertnstert.2015.01.031
  • Pfeifer, S., et al. (2017). Optimizing natural fertility: a committee opinion. Fertility and Sterility, 107(1), 52-58. doi: 10.1016/j.fertnstert.2016.09.029
  • Stanford, J. B. (2015). Revisiting the fertile window. Fertility and Sterility, 103(5), 1152-1153. doi: http://dx.doi.org/x.1016/j.fertnstert.2015.02.015
  • Stanford, et al. (2002). Timing intercourse to achieve pregnancy: current prove. Obstetrics and Gynecology, 100(6), 1333-1341.
  • Stephenson, J., et al. (2018). Before the start: nutrition and lifestyle in the preconception period and its importance for time to come health. The Lancet, ten.1016/S0140-6736(xviii)30311-8 doi: 10.1016/S0140-6736(18)30311-8
  • Vélez, M. Pet al. (2015). Female exposure to phenols and phthalates and time to pregnancy: the Maternal-Infant Inquiry on Environmental Chemicals (MIREC) Report. Fertility and Sterility. doi: 10.1016/j.fertnstert.2015.01.005
  • Verón, Thou. Fifty., et al. (2018). Impact of age, clinical conditions, and lifestyle on routine semen parameters and sperm kinematics. Fertility and Sterility, 110(1), 68-75.e64. https://doi.org/10.1016/j.fertnstert.2018.03.016
  • Waylen, A. Let al. (2009). Effects of cigarette smoking upon clinical outcomes of assisted reproduction: a meta-assay. Hum Reprod Update, 15(1), 31-44.
  • Zenzes, Yard. T. (2000). Smoking and reproduction: gene damage to homo gametes and embryos. Hum Reprod Update, 6(ii), 122-131.

Page created on: 28/08/2018 | Final updated: 12/03/2022

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Source: https://www.yourfertility.org.au/everyone/timing

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