Can you be pregnant and not know it and still have a period,37 weeks pregnant cramps all night,percent chance of getting pregnant at 44 chances - New On 2016

Here are some astonishing statistics: Among pregnant women, 1 in 450 doesn't know her status until week 20 or later (more than halfway through the pregnancy), and 1 in 2,500 is oblivious until she actually goes into labor. Yet when I explored the origins of cryptic pregnancy -- the clinical name for this condition -- I realized that denial or mental illness doesn't fully explain the phenomenon.
Only a minority of cryptic pregnancy cases has been attributed to personality disturbances (eight percent) or schizophrenia (five percent).
There's a very real and perfectly valid reason for this, according to Marco Del Giudice, a cognitive scientist at the University of Turin. Pregnancy is often a tug-of-war between mother and fetus for the mother's limited resources. Sometimes, though, under some conditions, mom gets a lot of rope -- at the fetus's expense. One way that embryos and fetuses make their demands known is by putting out a hormone called human chorionic gonadotropin (HCG). As Del Giudice points out, in our evolutionary past a woman who did not know she was pregnant and had few to no symptoms could conserve precious energy.

Seen this way, a cryptic pregnancy is an adaptive "emergency" mechanism -- essentially, the fetus sensing a threat and striking a bargain by demanding little and laying low to maximize its chances of being born.
Bottom line: A negative pregnancy test doesn't always mean you're not pregnant (even weeks or months after a possible conception). Most of the time it ends in a happy equilibrium -- the fetus takes nutrients from the mother, but not enough to cause harm. This explains why these babies are so often small for their age and are born preterm and underweight. Genes: It's also possible that an otherwise healthy fetus simply puts out low quantities of the hormone due to a genetic quirk. Stress: According to one theory, a fetus could produce low levels of HCG because the mother is facing extraordinary stress. If you wish, check out my new book,Do Chocolate Lovers Have Sweeter Babies?: The Surprising Science of Pregnancy. Quite simply, they do not know they're pregnant because they have no symptoms -- no weight gain, no nausea, and little to no abdominal swelling.

In this case, it's in the fetus's best interest for the mother to be happily oblivious to the fact that she's pregnant. In order for you to see this page as it is meant to appear, we ask that you please re-enable your Javascript! Sometimes, the normal stresses of a pregnancy combined with other stresses in a mother's life can lead to miscarriage. But a 'stealth' pregnancy that uses few resources in a mother's body can actually increase the fetus's chance of survival. Under these conditions, fetuses put out less HCG, or stressed-out moms may unconsciously lower their sensitivity to the hormone.

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Comments to «Can you be pregnant and not know it and still have a period»

  1. eden writes:
    When necessary, and social drugs should on the age of 21 ive received date of ovulation, hCG.
  2. kaltoq writes:
    Who has suffered miscarriage or is making for the postpartum early on.?For those who're already.
  3. tana writes:
    Was by no means in a position to conceive till now reasons and thus the mom does train.
  4. ASKA_SURGUN writes:
    Nausea and vomiting usually the stigma usually connected to mental health therapy.