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You are here: Home > Fertility & Trying to Conceive > Conception - Implantation of a Fertilized Egg

Implantation of a Fertilized Egg

by Teresa Shaw

107 Comments

When trying to conceive, it's sometimes hard not to scrutinize every sign and symptom you feel for possible signs of pregnancy. One of the most tell tale signs of pregnancy for many women is implantation, or when the fertilized egg implants into the lining of the uterus. But when exactly does implantation occur, and what are the signs of implantation?

When Does Implantation Occur?

Implantation typically occurs 6 to 10 days after ovulation, or day 20 to 24 of a menstrual cycle. However, it can happen a few days earlier or later. In an average, 28-day cycle, ovulation occurs on day 14 (the first day of a period is considered day 1 in a cycle). Once fertilization occurs, the egg stays in the fallopian tube for 3 days before entering the uterus and begins to implant to the uterine lining.

Find out when implantation will occur for you with our implantation calculator.

What is Implantation?

Implantation is the act of the fertilized egg attaching to the uterine wall. Once fertilization occurs, the fertilized egg remains in the fallopian tube for 3 days. It then enters the uterus where it gets very close to the endometrium (lining of the uterus) and begins to invade this endometrium to implant.

What are the Signs and Symptoms of Implantation?

Implantation is usually a quite gentle process, with very few symptoms that can be felt or noticed. Most symptoms are usually detected or diagnosed as implantation once a pregnancy has been confirmed; that is, once you realize you're pregnant, certain symptoms you might have noticed a few days prior will match up to those common to implantation. The following are some typical signs of implantation.

Implantation Cramps

Some women report having small uterine cramps around the time of implantation.

Implantation Spotting or Bleeding

A very small amount of spotting or implantation bleeding may occur for a short period of time, around 7 to 10 days after ovulation has taken place.

Basal Body Temperature Rise

If you are tracking your basal body temperature daily, you may notice a second thermal shift (rise in temperature) that occurs about 7 to 10 days past the date that ovulation has been confirmed.

Implantation Temperature Dip

You may also notice an implantation temperature dip that lasts for a single day, usually around 7 to 10 days past ovulation.

Only a positive pregnancy test or a blood test performed by your doctor can confirm that pregnancy has occurred.

Don't despair if you haven't felt or noticed any of these signs of implantation. Very few women actually notice implantation, and not feeling implantation does not mean that you are not pregnant. If you think you might be pregnant, be sure to make an appointment with your doctor to confirm a pregnancy.

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Comments



Showing 10 out of 107 Comments | Add Comment | See All Comments
JULIA
01/16/2012 8:24 am
Hey my cycle is 22 days when can i have sex and get pregnant?
fingerscrossed
11/20/2011 11:13 pm
I have a pretty light cycle lasting 3-4 days every month getting it every month between the 20th and 23rd. my ovulation day was 11/2 having had sex 10/31 and 11/1 and again on 11/3. not quite 3 days later i experienced breast tenderness which was odd for me to get that so soon but i shrugged it off. then on the 16th i got some pinkish brown discharge when i wiped thinking it was the start of af coming early, realizing that nite it was not really there anymore. that night i had some light cramping just enuf to keep me awake, nothing extreme, then the next day at night i got some clots and had to change my tampon 3 times in less than an hr, although it was never filling a tampon at any given time. that stopped and now i have been "bleeding" lightly since the 18th, (just a dark red-brown discharge when i wipe) this is going on a total of 5 days altogether. i don't know if this is a very odd cycle for me or if its maybe implantation? has anyone else experienced this as well? please help!
jj
11/08/2011 10:43 pm
Hey stephanie, first find out the first day of your last menstrual period and begining counting from day 1 to day 14 , the guy you had sex with closer to day 14 is the guy you got pregnant from. good thing you had sex far apart from each guy, so its easy
Julia
11/08/2011 12:35 pm
I am trying for a baby and i want to know if pregnancy is guaranteed if my egg is fertilized
Stephine
10/15/2011 10:16 am
I had sex on june 1 and then again on june 14 with a different guy. im pregnant now but i dont know how to tell which one is the father. somebody please help : (
KC
10/09/2011 7:42 pm
We're just recently off bc and trying to conceive. i'm concerned about my short menstual cycle. i seem to be ovulating (+ test) on day 10, but getting my next period on day 19. that doesn't seem to be enough time for implantation to occur before my period even if we were to score in the fertilization. anyone have any knowledge on this? i'd appreciate it:) thx
dannielle
10/06/2011 10:55 pm
I had my menses on the 18 of september. around the 27 to 2nd of october i started having sex.on the 6th of october i saw a pinkish colour in my under wear which looked like blood but lighter. it just came for a few hours and that is by the end of the day the was no blood. could that be a sign of implantation?
izzie
09/26/2011 7:24 pm
Hi. me and my bf had sex on sept21, day 6 of my cycle. i'm so scared that i'd get pregnant because it was my first time. one more thing that concerns me is that i have an irregular menstrual cycle. :'( i need help very badly. will i get pregnant? :(((
Mica
09/01/2011 11:09 am
Ovulation predictors are not very sensitive, so when you use them and get a negative result, there's still a good chance that you did ovulate and it wasn't sensitive enough to catch it. the best and cheapest way to figure out when you ovulate is to chart your bbt and to check your cervix. i would say check your cervical mucus, but some of us are too dry for that. the cervix is firm, like the tip of your nose, most of the cycle, but it softens when you ovulate. it also lowers at the same time. once it rises and firms up again, ovulation has already passed. there's still a small chance of getting pregnant for the next 24 hours or so, but you generally want to have sex before the softening so the sperm has time to reach the egg before it disintegrates. the beauty of checking the cervix is you can do it as many times as you'd like throughout the day. for those whose cycles are confusing, charting bbt, cervical mucus, and cervical position and firmness will help you understand what's happening at least a little better. unless you produce high enough amounts of lh, ovulation predictors will just waste your money. charting bbt will also help you figure out whether or not you're pregnant. progesterone declines rapidly 24 to 48 hours before the next period. the progesterone was what was responsible for the rise in temperature after ovulation, so when you see the sudden drop on your bbt chart, you know your period is coming. if you know your period well from at least a few months of charting, and you don't see the drop in temperature on the day you would expect to see it, there's a good chance you're pregnant. still get a pregnancy test, of course, but i wouldn't bother to test if i do see my temperature drop. it would be a waste of a test to prove i'm not pregnant. progesterone continues to rise throughout pregnancy. so it wouldn't make sense for your temperature to fall without a drop in progesterone. hope that all made sense. if you want to get pregnant, get your men into boxers, have sex everyday (or let him masturbate everyday), but you must have sex everyday starting about 6 days prior to ovulation. continue to lie down on your back after sex with a pillow under your butt to let gravity help the sperm get to the egg. it has been shown to increase chances of getting pregnant. if you want to gender sway for a girl, stop having sex 2 to 3 days before ovulation, and if you want to gender sway for a boy, only start having sex 1 or 2 days before ovulation. what we currently know is that xy (male) sperm can live for 1 to 3 days and xx (female) sperm can live for 3 to 6 days. gender swaying does not guarantee a particular gender, but it helps increase the chances. the ph of your body affects the outcome as well. xy sperm favors (swims faster and lives longer in) alkalinity, but xx sperm favors acidity. @aniky, even with a 28 day cycle, i can only guess that you ovulate on cd14. i could be wrong. you would have had to chart to know for sure. assuming you do ovulate on cd 14 though, either of these men could be the father since intercourse would have occurred within 3 days of ovulation. again, that's based on my assumption being correct. i suggest a paternity test when the baby is born (preferably a cheek swab).
edd
08/14/2011 2:36 pm
My husband n i have been trying to have a baby for 6 months now. for a month now i have been discharging so i couldn't tell when i ovulated,, but we have sex almost every two days. i don't feel comfortable in ma tommy, i have cramps and abdominal pain, can it be am preg. help me

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