PREGNANCY CALCULATOR
CLICK HERE
CONGRATULATIONS!
This is a calculator that tells you your pregnancy due date.
It helps you to plan when the stork will make its appearance.
HOW TO USE CALCULATOR
Click on The Pregnancy Calculator Icon above.
On the calculator page, click on one of four options available.
- Calculate the due date based on the first day of the last menstrual period.
- Calculate the due date based on the date of conception.
- Calculate the current gestational age based on the due date.
- Calculate the required conception date based on the due date.
Enter the appropriate date for the option you have chosen.
Fertilization usually takes place 14 days before your next period. If your
menstrual cycle is longer or shorter than 28 days, enter the length of your menstrual cycle (only
available for Option 1).
Use the slide bar above the calculator to show fetal development from 0 to 40 weeks gestation. It will show
you your baby's development and information about the stage he/she is in for that week of gestation.
FOR MORE INFORMATION SEE THESE LINKS
MoonDragon's Pregnancy Due Date Calculator
MoonDragon's Pregnancy Due Date Hand-Held Calculator For Print Out
MoonDragon's Pregnancy Information: Website Pregnancy Calculator
MoonDragon's Pregnancy Information: Ways To Tell When You Conceived
A QUICK EMBRYO-FETAL DEVELOPMENT OVERVIEW
EMBRYONIC DEVELOPMENT - 12 STAGES
This enlarged model represents the following stages of embryo development:
1. Ovule shortly after fertilization
2. Two-cell stage
3. Four-cell stage
4. Seven-cell stage
5. Morula stage
6. Blastocyst with trophoblast and embryoblast
7. Blastocyst with early formation of embryo process
8. Blastocyst with start of implantation
9. Embryo (approx. 12th day)
10. Embryo (approx. 20th day)
11. Embryo (approx. 28th day)
12. Embryo (approx. 2nd month)
The first 8 models are enlarged approx. 4,000 times, the other 4 models are enlarged approx. 4-5 times.
The first 8 stages can be removed from the baseboard for closer study.
Model Available From:
Nucleus Inc.
MedPics.findlaw.com
FIRST MONTH (Conception to 6 Weeks)
Known as an embryo; baby is only about the size of a grain of rice.
Neural tube that becomes the brain and the spinal cord develop.
Heart develops and begins to beat around the 25th day.
Digestive tract develops.
Arms and legs are beginning to form.
The umbilical cord, which carries nourishment to and waste away from your baby, is developing.
SECOND MONTH (7-10 weeks)
Heart is beating.
Fingers and toes are forming.
Organs, like the stomach and liver, are developing.
Ears and nose are forming.
THIRD MONTH (11-14 weeks)
Baby is about three inches long and weighs about one ounce.
Sex organs are developing (although the physical structures of being male or female are not apparent).
Circulatory system is working.
Mouth starts opening and closing.
Kidneys are functioning, producing urine that's passed into the amniotic fluid and eventually
removed through the placenta.
Lifelong eye color is present and eyelids grow over them.
Baby starts moving in utero (cannot be felt yet).
FOURTH MONTH (beginning of second trimester)
Baby is about five inches in length and weighs three to four ounces (enough to cradle in hand).
Develops sucking and swallowing reflexes.
Fingers and toes are becoming defined.
Begins to move arms and legs.
Bones make blood cells.
Teeth form under gums (although they do not appear until several months after birth).
Sex organs become distinct (sex becomes determinable at this point).
FIFTH MONTH (19 - 22 weeks)
Baby is about eight to ten inches long and weighs 10-12 ounces.
Frequent movement, since bones are harder and muscles are stronger, actual movements are -beginning to be felt.
Soft, downy hair called lanugo covers baby's body.
A coating called vernix protects the baby's skin from its constant exposure to amniotic fluid.
Hair may be growing on the head.
If the baby is female, eggs have begin to form in her ovaries awaiting to begin the cycle of life years later.
SIXTH MONTHS (23-26 weeks)
By the end of the month, baby is about 13 inches long and weighs about 1 3/4 lbs.
Has no body fat and skin is wrinkled.
Can suck his thumb.
Bones are hardening through deposits of calcium.
Lungs begin to stretch, preparing to breathe after birth.
Miniature version of how the baby will be at birth.
SEVENTH MONTH (beginning of third trimester, 27-30 weeks)
Baby is about 15 inches long and weighs about 3 pounds.
Becoming very active --maybe able to see -movement on belly.
May suck thumb or hiccup.
The eyelids, which have been closed since about -the fourth month, slowly open –
eyes respond to changes in light and dark within the womb.
Can make grasping motions with hands.
If baby is male, testicles begin to descend from the abdomen (where they developed) into his scrotum.
EIGHTH MONTH (31-34 weeks)
Baby is now about 18 inches long and weighs about five pounds.
Can see and hear.
Brain and nerves are growing rapidly, directing bodily functions.
Arms and legs are smooth and plumb and skin is a healthy color.
Lungs are still immature, but other organs are well developed.
Acquired immunity to many infections as protective antibodies are passed through the placenta,
into the blood stream.
Baby shifts into a position that will remain until birth.
NINTH MONTH (35 weeks to delivery)
Baby is about 20 inches long and weighs six to seven pounds.
Continues to gain about half a pound a week until delivery .
Lungs are mature.
Lanugo and much of the vernix is gone.
Baby gets into position for delivery settling down further into the pelvis; since baby is confined
in this position, it may seem less active – but movement is still felt.
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Photos obtained from
A Child is Born by Lennart Nilsson
and
Pregnancy - In Anatomical Illustrations
by the Carnation Company
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