When Did I Conceive? Calculate Your Due Date
- WISH
- 8 hours ago
- 3 min read
You can get just about any information online. However, if you are wondering, “When
did I conceive?” or “How far along am I?” A due date or conception calculator can give
you a good estimation, but it won’t give you the information you need to make
decisions about your pregnancy.
It’s also important for you to know if you are really pregnant. Home pregnancy tests,
while far more accurate than they used to be, are a verification of pregnancy, not a
confirmation.
The only way to be sure is to get an ultrasound. An ultrasound measures how far along
you are, your approximate conception date, the due date, and the viability of your
pregnancy. Ultrasound exams provide images and include various measurements of
your developing baby that can help estimate how far along you are in weeks and the
approximate conception date.
WISH Medical Women's Health in Moscow, ID, can provide a cost-free ultrasound to those who qualify after a positive pregnancy test is performed.
How To Know When You Conceived
There are a few ways to have a general idea of your conception date before an
ultrasound.
Ovulation
The first way to find out your conception date is to determine when you were last
ovulating. In general, women can only conceive when ovulating — that is, their ovaries
release a new egg into their fallopian tubes for fertilization. That means you can use
your ovulation dates to determine when you became pregnant.
Ovulation usually occurs about two weeks after your menstrual period and lasts for two
or three days. This means you can sometimes determine when you conceived based
on your ovulation cycles — simply determine when your last menstrual period was and
add approximately two weeks.
However, this method isn’t always accurate. Not all women have the same cycles of
menstruation and ovulation. Some women’s menstrual cycles are irregular, some range
between 21-35 days, others have ovulation periods closer to or further from their
menstrual period, and some women aren’t sure when their last period was. In other
words, calculating conception based only on your body cycles can be difficult.
Intercourse
Another way to learn your conception date is to try to determine the last time you had
sexual intercourse. Unfortunately, this method isn’t accurate either. Conception is a
process that takes time, and a man’s sperm can stay alive inside your body for up to a
week after sex.
This can make it difficult to determine when you conceived, especially if you had more
than one partner when you ovulated. Also, remember that you could become pregnant
even if you or your partner used birth control, since no method of birth control is 100%
effective at preventing pregnancy.
Ultrasound
An ultrasound is the most foolproof way to determine your conception date. A
pregnancy confirmation ultrasound can help you determine the approximate time you
conceived and the age of your growing baby.
WISH Medical Women's Health can provide a cost-free ultrasound so you can confirm your pregnancy. This method of determining your conception date can be more accurate than a date-based calculation, especially for women with irregular periods or women who don’t know their last menstrual period date.
Start with a free pregnancy test appointment at WISH Medical Women's Health in Moscow, ID, and get the answers you need on abortion pills, procedures, pregnancy, adoption, parenting, and more.
References:
Professional, C. C. M. (n.d.). Conception. Cleveland Clinic.
American Pregnancy Association. (2022, February 11). Ultrasound: Sonogram.
Menstrual cycle: What’s normal, what’s not. (2023, April 22). Mayo Clinic.
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