How long from conception is a normal pregnancy

Does a normal 38 weeks pregnancy start from conception or implant…?

http://answers.yahoo.com/question/index?qid=20090715085001AA86Wxi

An average pregnancy is considered to be 40 weeks counted from the first day of the last menstrual period. It is more common to count from the first day of the last menstrual period because date of conception is not easily determined. Even …

Is it normal to experience cramps in the very beginning of pregna…?

http://answers.yahoo.com/question/index?qid=20080317195953AACEC2f

normal to feel early, but at 2 weeks you sure you pregs and not getting your period? pretty early to be sure.

Related Questions Answered on Y!Answers

How long after conception can you take a pregnancy test?

Q: As many women should know, if you are on the pill and you miss some you may ovulate at anytime during that month. So your missed period may not be at the normal time to test for pregnancy so how long should someone wait to see if they are pregnant after actually having sex?Also, I’m on the pill but I don’t take them at exactly the same time everyday because of my schedule. My doctor also told me taking my antibiotics may mess with the effectiveness of the pill.

A: If you do not chart or monitor your fertility in any way, and you think you may have conceived, you should wait 19 days (or longer) after having sex to test. Why 19?! Sperm can live approximately 5 days in the proper environment; if the sperm managed to live until you popped an egg, the actual conception could have taken place several days after the sex act that got the sperm there. To make sure you’re not testing too early, assume the sperm had very long lives (5 days is considered a very long sperm life) and that conception occurred then. Then allow 14 days for the embryo to implant and develop enough hCG to show up on a pregnancy test (96% of pregnant women will test positive by then.)http://www.peeonastick.com/hptfaq.html

PLEASE help with some statistics: The length oh human pregnancies from conception to birth varies according…?

Q: Please if you could, SHOW YOUR work. I don’t understand how to do it and i want to learn how!! Thanks :)The length oh human pregnancies from conception to birth varies according to a distribution that is approximately normal with mean 266 days and standard deviation 16 days. Use the 68-95-99.7 rule to answers the following questions:a) Between what values do the lengths of the middle 95% of all pregnancies fall?b) How short are the shortest 2.5% of all pregnancies?c) How long are the longest 2.5% all pregnancies?

A: a) 95 pecent of all pregnancies lie within two standard deviations from the mean. So 95 percent of pregnancies lie between (266 – 2(16)) and (266 + 2(16)), between 234 and 298 days.b) The shortest 2.5 percent of pregnancies are more than 2 standard deviations less than the mean. So, they are less than 234 days gestation.c) The longest 2.5 percent of pregnancies are more than 2 standard deviations more than the mean. So, they are more than 298 days.

I took a pregnancy test today, 12 days after “the sex” and it was negative. Is this normal at this time?

Q: “The sex” was 12 days after my first day of my period, So this should have been good timing for conception. How much longer until i can believe the home pregnancy test is telling the truth.

A: http://www.peeonastick.comYou can test 19 days after the day you think you became pregnant, by this time 96% of women will test positive if they are indeed pregnant.