When do i conceived

To do this, you need to know the length of your menstrual cycle which tends to vary from 23 to 35 days. To calculate this — you should note how many days have passed from the first day of bleeding in your last period, to the first day of bleeding in your next. From this figure, subtract 14 days from the end of your current cycle to determine the day you ovulate.

If you have irregular menstrual cycles, or your cycle length varies from month to month, it will be difficult to calculate your ovulation date. Ovulation urine tests may be useful, and you should consider seeking further advice from your GP or a Fertility Specialist. Conception is a complicated sequence of events because all of the following need to be in place for it to occur:.

Most people start to consider seeking professional advice after six months of trying to conceive naturally without success. A member of Virtus Health. New enquiries. Patient Portal Clinic locations Contact us. Hunter IVF. It becomes less accurate later in pregnancy.

The best time to estimate gestational age using ultrasound is between the 8th and 18th weeks of pregnancy.

For a woman with a regular period, conception typically occurs about days after the first day of the last period. Most women do not know the exact date of conception because it can be challenging to know exactly when ovulation occurs.

Thus, their conception date is merely an estimate based on the first day of their last period. Women who undergo special procedures, such as artificial insemination or in vitro fertilization , typically know the exact date of conception. Based on the last menstrual period, the estimated due date is 40 weeks from the first day of the period. For women who have irregular menstrual periods or women who cannot remember the first day of their last menstrual period, it can be difficult to determine gestational age using this method.

In these cases, an ultrasound exam is often required to determine gestational age. In some cases, it is difficult to determine the gestational age because the baby is unusually large or small. Also, in some cases, the size of the uterus in early pregnancy or the height of the uterus in later pregnancy does not match the first day of the last menstrual period.

In these cases as well, it is difficult to obtain an accurate gestational age. Calculating Conception. Join now to personalize. Choose a calculation method Last period Conception date I know my due date.

First day of my last period. See your timeline. Sources BabyCenter's editorial team is committed to providing the most helpful and trustworthy pregnancy and parenting information in the world. Methods for Estimating the Due date. American College of Obstetricians and Gynecologists. Committee Opinion. May Reaffirmed Featured video. Chinese Gender Predictor. Pregnancy Week by Week. Most popular baby names of Pregnancy Weight Gain Calculator.

Baby Names Finder. Your Body. New to BabyCenter? Join now. Password Forgot your password? Keep me logged in. Log in.