how long after egg fertilization does implantation occur?
105008
If it takes place, within two days.
86075
It depends on your cycle (how many days..TOTAL, there are including your period days, a month).  If your periods are regular every month without fail and your cycle is 30 days (period around the 14th day, out of 30 days), or your cycle is 50 days (a period around the 25th day of every couple of months)....you are most fertile a couple of weeks (14 days to be exact) before your period.  But if your period is irregular, then when you're most fertile will be hard to tell.  My suggestion, whether you want to be pregnant or not, is to buy some ovulation tests over the counter and see when you're ovulating....that will definitely tell you when you're most fertile.  Good luck :)!!
577744
YES: For a normal cycle of 28 days, the 14 day (from 13 until 15) is the pic "fertility" days in a women, that´s when a women ovulates and all the body is ready for a pregnancy. All the information that you need is in the sites bellow. You have a low probability of been pregnant. Any way, If you fell not sure, and you still have questions, take a pregnancy test in 4 weeks, and after that at 5 weeks, it will tell you with a big probability whats happening in your body (pregnant or not...)\nPLEASE GO TO THE FIRST SITE, it will help you!!!!
607824
Pregnancy can now be detected 72 hours after fertilisation, but sperm can live for 3 days before attaching itself to the egg, so in answer, no. You can tell up to 6 days after. Hope this helps.
495319
The best time to conceive is 7 -10 days after the first day of your menstrual cycle. Keep in mind that sperm can live up to 48 hours after ejaculation. If you really want to get pregnant your best bet is to have sex every other day because it gives the sperm count a chance to elevate again.\n\nGood Luck !
526819
go to http://www.mymonthlycycles.com and put in your period info and it will calculate when you will ovulate and be fertile.\n\n\nOne of the hallmarks of the current generation is that women are choosing to have children later in life and it is likely that this trend will continue. On average, women today are having two children with approximately four years time between the first and second births. Between 1985 and 1994 the proportion of births to women in their 20s decreased from 62 percent to 53 percent, while the proportion of births to women 30 - 44 years of age increased from 25 percent to 34 percent. Since the mid 1970s there has been a four-fold increase in the percent of first births to women 30 years and older. \n\nOvulation is the term used to define the release of an egg (usually one, though sometimes more) from a woman’s ovary. Conception occurs when a sperm fertilizes the egg. While sperm can survive for several days inside a woman’s reproductive tract, an egg can only survive for up to 24 hours after ovulation. This puts a limitation on the time when conception is most likely to occur. According to a recent survey conducted at the World Congress on Fertility and Sterility, 20 percent of the problems in conceiving are due to a couple’s failure to time intercourse correctly during the woman’s fertile time period.\n\nThe Opinion Research Corporation International (ORC) found that most women don’t know when they can become pregnant. Nearly all women (98 percent) of reproductive age are unclear about how many days each month it is possible to get pregnant, and more than half (52 percent) of women aren’t sure when those fertile days occur during their cycle. Most parents do not know the day(s) on which their children were conceived.\n\nTo increase chances of becoming pregnant, women should monitor their body’s fertile time period - the time that sperm can survive within a woman’s reproductive tract until ovulation and fertilization can occur. A woman’s most fertile period is typically several days (usually no more than 5-6) ending on the day after ovulation. Because menstrual cycles vary from one woman to another and even from one cycle to the next in the same woman, identifying a woman’s fertile time period can be challenging. However there are several methods a woman can use to determine when she is most likely to conceive: \n\nCalendar - A woman can chart her menstrual cycle on a calendar to determine the days she is most likely to ovulate. \nBasal Body Temperature (BBT) - The BBT is a woman’s temperature first thing in the morning, before getting up or doing any activity. In a normal menstrual cycle, a woman’s BBT rises almost one degree from just after ovulation through the beginning of her next cycle. \nCervical Mucus - Most of the time the cervix produces a mucus that protects the body from sperm, bacteria and other organisms. For several days each month, the consistency of the mucus changes to allow sperm to enter the fallopian tubes. By monitoring these changes, a woman can determine her fertile time period. \nSymptothermal - Charting a combination of fertility indicators like cervical secretions and BBT can often help to indicate a woman’s fertile time period. \nThe above charting methods require women to record the secondary signs of fertility caused by changes in hormones. Because these conditions can be affected by factors such as infections or medications, they require careful monitoring and analysis, and they are never 100% reliable. An alternative to these methods is measuring changes in hormone levels. An increase in the level of estrogen marks the beginning of most women’s fertile phase, while an increase in the luteinizing hormone (LH) level signals that ovulation will occur soon - usually within approximately 24 to 36 hours.\n\nThe fertility monitor is a relatively new approach designed to provide daily information about a woman’s fertile time period. The monitor recor
664034
You actually need to count from the first day of your last period before you got pregnant. For example, if it was Dec 17th (exactly 2 weeks before conception), you'd be approximately 23-1/2 weeks. Over halfway there! Yay for you!!!
55776
ovulation lasts from 24 to 36 hours during the middle of your cycle. if you are regular, ovulation will on the 14 day (day 1 starting the first day of your period).
824630
implantation bleeding takes about 5 days...some people feel some cramping but not everyone...whats wrong...maybe you got yoru period maybe it was ruff and you just ended up bleeding....take a pregnancy test...we cant tell you over the net if your knocked up or not.
658348
go to http://www.mymonthlycycles.com and put in your period info and it will calculate when you will be fertile and ovulating.\n\nA woman is usually able to get pregnant for about 5 days each month, when ovulation occurs. On average, ovulation occurs 12 to 16 days before the menstrual period begins. \nThe key to becoming pregnant is determining when ovulation will occur. \n\nBecause sperm can live for 3 to 5 days in a woman’s reproductive tract, it is possible to become pregnant if intercourse occurs several days before ovulation. \n\nThis tool should not be used to prevent pregnancy. \n\nYour menstrual cycle begins with the first day your period starts and ends the day before your next period starts. If you do not know the number of days in your menstrual cycle, use 28 days, which is the average length of a menstrual cycle. \n\nIf you want to determine the length of your cycle, use a calendar to track it. Some women have longer or shorter cycles. \n\nWhile women usually ovulate at day 15, it’s also normal to ovulate well before or after the 15-day mark. This calculator is therefore meant to give you a rough estimate. \n\nThe American Infertility Association (AIA) has issued a set of recommendations to help couples identify a woman's "fertile time," the period each month when she is most likely to be able to conceive. \n\nThe guidelines are in response to recent studies showing that 98% of women do not know how to identify their most fertile time, and 20% of couples who seek treatment for infertility are not timing intercourse correctly. \n\nSperm can survive for several days inside a woman's reproductive tract (waiting for the egg), but an egg can only survive for up to 24 hours after ovulation. This is the woman's "fertile time." \n\nThe AIA suggests that women consider using several simple, non-invasive procedures to help identify their most fertile time, including: \n\n* chart your menstrual cycles on a calendar to determine the days they are most likely to ovulate \n\n* take your temperature (which rises during ovulation) each morning during the week that ovulation is most likely to occur \n\n* monitor your cervical mucus during the month (the consistency changes for several days each month to allow sperm to enter the fallopian tubes) and \n\n* use a fertility monitor to measure the levels of estrogen and luteinizing hormone (LH) in your urine, which can also indicate that ovulation has occurred \n\nThe guidelines are available on the AIA Web site at www.americaninfertility.org
692674
Fertilisation occurs before formation of the shell. However, many times, birds lay eggs that are not fertilised (take chicken eggs for example).
954707
Each cycle one of your ovaries releases an egg (called ovulation). The other ovary remains dormant meaning it doesn't do anything. The egg travels down into your fallopian tube (part that connects the uterus to the ovaries). Then if pregnancy occurs sperm fertilizes the egg and then the "baby" moves down into the uterus where it grows until it is born. During pregnancy both ovaries do not ovulate anymore until postpartum (after the baby is born). Usually the first ovulation (releasing of an egg) occurs 2 weeks to 3 months after the baby is born. If the mother breastfeeds exclusively then sometimes ovulation won't occur again until the baby is a few months old to a year old.
332049
I can't find any infomation about the interval between mating and egg laying in house sparrows, specifically. But with most birds it takes a couple of days for the egg to form. Some will wait up to a week.
700398
The egg fertilizes in the fallopian tube
699873
At 5-6 days old, the "embryo" (if you can even call it that) is still a blastocyst. In this blastocyst is a hollow core which contains an inner cell mass, which is made up of approximately 30 cells. These cells are cultured & become the vital part of stem cell research. After the 5-6 day period, the blastocyst begins to fill in (so it is not hollow anymore), and then the inner cell mass isn't obtainable.
1035570
It depends on when you ovulated.  If his sperm went in you 2 to 3 days prior to ovulation, then yes, you could be pregnant.  It is also possible the you ovulate very close to your period...so, I guess the answer to your question is that yes, it is possible that you can get pregnant this way.
1009904
The eggs are nourished within the ovaries, and each month one fully matured egg is released. A mature egg has undergone a process of cell division that gives it 23 chromosomes -- just enough to match an equal number of chromosomes from the sperm. Once an egg is released from an ovary, it's pulled into one of the fallopian tubes leading to the uterus. But one of the 20 million to 200 million sperm released by the man has to catch up to that egg soon: If the egg doesn't encounter a healthy sperm, it will perish in 24 to 36 hours. In that case, it disintegrates and flows out with your period. If the egg does get fertilized, it leaves the fallopian tube and travels into the uterus. If everything is in good working order, it will implant there and begin to develop into a baby.