![]() | Pregnancy LengthMonths? Lunar months? Weeks? Days? Trimesters? | ![]() |
Weeks? Months? Trimesters? Lunar months? Days? | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
The charts below show how the weeks, months and trimesters break down into each other. If you are confused, you're not alone. While some people talk about pregnancy being 9 months long (divided into three trimesters), most health care providers refer to pregnancy as being 40 weeks long, starting with your last menstrual period (LMP). For the Weeks to Months to Weeks Calculator - Convertor - Click here >> A normal pregnancy lasts 280 days from your LMP which is about 266 days from conception to birth. The first two weeks of your pregnancy includes the time of your period, ovulation and fertilization. Conception occurs approximately 14 - 16 days after the first day of your period. The date of conception is not always known and can vary between women. The date of LMP is known by most women so doctors use this date as a starting point for pregnancy. From your LMP they will add 280 days and this will give your Estimated Due Date or EDD. In general, all doctors agree that pregnancies, when using the LMP dating technique, average approximately 280 days or 40 weeks.
The charts below show how the weeks, months and trimesters break down into each other. Last seen near Cambridge, Massachusetts, United States 4:37 PM Saturday (Apr 28, 2007) with pregnant female (5 months) A.K.A. km0804 ¶:o) *This is just a guideline and the exact weekly breakdown may differ from source to source.
Example: [ So - You have completed three months and are now into your fourth month ] Think like your age:- You are 28 and have completed 28 years, you are in your 29th year. The most common weeks to months breakdown used for the 9 months of pregnancy:
The most common trimesters breakdown used for the 9 months of pregnancy: First Trimester ends 13 weeks + 3 days ~ Second Trimester ends 26 weeks + 6 daysTrimester Calculator - The three basic methods of calculating trimesters are explained. Personal timeline for your Pregnancy - Print out and Keep a copy in your purse! | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Back by popular demand!It has now been added to the top of all the Fetus Development pages again, so you can click a week, a month or trimester to see what your little one will be doing in your 'bump' at that stage. | ||
Convert weeks to months Calculate: Pregnancy weeks >> months >> weeks Trimester Calculator - How the trimesters are calculated is explained. | ||
| convert pregnancy weeks into months |
Confusion starts here. | ||
Time breakdowns for pregnancy
Trimester Calculator - The three basic methods of calculating trimesters are explained. No matter what method is used; the date you will be given for when your baby will arrive is officially called your estimated date of confinement (EDC), your estimated date of birth (EDB) or estimated due date (EDD). This is more popularly called your 'due date'. Even an estimated due date is nothing more than a estimate. Only 10% of women deliver on the estimated due date. Half of women hit the due date within one week, but 90% deliver within two weeks of the predicted due date. This is why some obstetricians have started predicting 'due weeks' instead of 'due dates'. Your 'date' may be revised by health care providers during your pregnancy. Your baby's development is on a strict schedule during the first trimester. The fetus CRL (Crown to Rump Length) and the EHR (Embryonic Heart Rate) are accurate estimators of fetus age in the first trimester. CRL and EHR are measured at your ultrasound scans, the fetus age should be within + or - 1 week of your LMP. No matter how you measure your pregnancy, even the best estimated due date can be inaccurate. So, although the waiting and uncertainty of not knowing exactly when your baby is to arrive can be unnerving, the best plan is to stay flexible and to always be prepared for the unexpected. Fetal growth charts and tables for: - CRL - BPD - OFD - HC - HL - FL scan measurements. | ||
| Fetal Development guides -- Week by Week -- Month by Month -- Trimesters Due Date and Fetal Development Weeks Calculator for your pregnancy weeks. Calculate and print out a personal Time line for your Pregnancy. Conception Calculator estimates probable conception dates from Birth, LMP and Due dates. Trimester Calculator - The methods of calculating trimesters are explained. | ||
How long is pregnancy? | ||
| The average pregnancy lasts 266 days, or 38 weeks, or 9 months. But, according to the calendar used by medical professionals, you will be pregnant for 280 days, or 40 weeks, or 9½ months. When your pregnancy is dated using a 40 week calendar your baby's age is called 'Gestational age', but your baby to be will actually be about two weeks younger than that. Conception to birth is about 38 weeks and 'Fetal age' is what his or her actual age is called. Q: This all sounds fine, but if you calculate the due date from LMP, are you counting weeks before conception? A: Yes a Pregnancy lasts 40 weeks from the start of your LMP. Gestation is 38 weeks from conception to birth. Although it may be confusing at first, health care providers begin counting the pregnancy from day one of the LMP. Yes, that is about 2 weeks before you even conceived. Physicians and midwives start the pregnancy clock on the first day of a woman's last menstrual period (LMP). Some women may be unable to recall their LMP or have very irregular or infrequent cycles. When you visit your care provider, try to give as close an estimate as possible. The closer the estimate, the less likely you will worry or experience stress if your baby does not come on the EDD. Only about ten percent of expecting moms deliver on their EDD anyway. An experienced practitioner will also rely on physical clues to determine the baby's due date. These clues are most evident within the first two months of pregnancy and include:
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So when is my due date? | ||
| The traditional way to calculate a due date is to add 9 months from the first day of your LMP (last normal menstrual period) and then add seven days. For example:
Remember, calculation of your due date is certainly not precise (after all, women get pregnant in all the months of the calendar, some of which have 28, 29, 30 and 31 days!). Also, all women do not have a 'typical' 28 day cycle! This is why your due date is usually referred to as your Estimated Due Date or EDD. Use: the Due Date Calculator to estimate your due date. Calculate and print out a personal Time line for your Pregnancy - keep a copy in your purse! or Due Date and Fetal Development Weeks Calculator for your pregnancy weeks. Conception Calculator estimates probable conceive dates from Birth, LMP and Due dates. | ||
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