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You are here: Home > Fertility & Trying to Conceive > Conception

Implantation of a Fertilized Egg

by Teresa Shaw |
321 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 a fertilized egg, or zygote, implants into the lining of the uterus. Many women ask when 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 with the first day of a woman's period being considered day 1 in a cycle. Once fertilization occurs, the egg stays in the fallopian tube for three days before entering the uterus and begins to implant itself to the uterine lining.

Find out when implantation will happen based on your last menstrual period or ovulation date with our implantation calculator.

What is Implantation?

Implantation happens when a fertilized egg attaches itself 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 lining of the uterus (endometrium) 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 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.

Only a positive pregnancy test or a blood test performed by your doctor can confirm that you are pregnant. 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.

Resources

Implantation calculator - Find out when implantation will occur if you conceived

Calculate your approximate ovulation date with our ovulation calculator

Do you think you might be pregnant? Find out your due date with our due date calculator.

8 Signs You May Be Pregnant

Early Pregnancy Tests Reviewed

hCG Hormone in Pregnancy

Trying To Conceive Message Board


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Comments


Showing 1 - 10 out of 267 Comments
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Guest Jan 28, 2015 07:18:27 AM ET

Hi. i had my period on 12/31/14. normally, my cycle is 26 days. i started vomiting and having stomach pain since 1/20/15. my period was due on 1/26/15. my pregnancy test was negative, but just got faint line after 3 hrs. today, 1/28/15 i started spotting when i wiped with tissue. it's not like my regular period. some reddish, brown discharge. do you think i am pregnant?

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Sophia Jan 26, 2015 01:49:56 PM ET

I had sex with my husband on jan 12th, 13th, and 14th. i had my period on the 1st of jan. on the 26th of jan, i had light reddish spotting with mild cramping and dizziness. moreover, i experienced mild cramping off and on about 2 weeks after lmp. what happened to me? i'm willing to get pregnant now. what should i do?

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Guest Jan 26, 2015 05:14:38 AM ET

I had unprotected sex on jan 1st, and my period ended on dec 26th after 25 days after i had sex. i was bleeding now. is this a regular period, or a sign of pregnancy?

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Guest Jan 26, 2015 05:09:32 AM ET

Hi. i had sex 23 days ago. now, i am bleeding. is it a sign of pregnancy?

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alexia Jan 22, 2015 09:28:48 PM ET

Hi. my last menstrual cycle began on december 22, 2014, and we had unprotected sex on december 25th and the 28th. today is january 22, 2015, and i'm one day late. i did a pregnancy test and it was positive. my question is, when is it most likely that i conceived? for example, if i had unprotected sex on dec 28th, did i get pregnant right away, or would it have taken a few days for implantation to happen?

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brittany Jan 21, 2015 02:01:32 PM ET

I might be pregnant. i had sex 8 days ago, last tuesday. is it possible to be pregnant this early? i think i ovulated when i had sex. i don't really know the guy, and now i might be pregnant by this guy. i am 23, still live with my mom, and doesn't know about it.

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Guest Jan 16, 2015 11:35:51 PM ET

On day 20 of my menstrual cycle, i experienced spotting and cramps that lasted a couple of hours. it has been 2 days since the spotting, and i have had extremely sore breasts to the touch, and they get heavy and feel full. also, i have been sleeping all day, not even knowing i was that tired. i took a pregnancy test 2 days after the spotting. it was negative. can someone please give any advice associated with this? thanks!

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t Jan 15, 2015 09:27:51 PM ET

I had unprotected sex on jan 5th, and my period came on jan 11th. could i be pregnant?

Anon Jan 23, 2015 01:59:02 PM ET

If you got your period, then i would imagine that you are not pregnant.

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saima shakeel Jan 13, 2015 12:05:37 PM ET

Hi. i had sex with my husband on saturday and sunday, and my periods stopped 17 days ago. now, i feel pain in my uterus and my back. could it be possible that i am pregnant?

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Guest Jan 5, 2015 08:20:11 PM ET

I'm really nervous. i had unprotected sex 3 times after my period ended. now, i'm having mild cramping, and sometimes i feel like i'm going to be sick, but i never throw up. could i be pregnant?

Sophie'sworld Jan 9, 2015 03:03:55 PM ET

Well, do you commonly have these symptoms before your period begins? i normally have cramps, dizziness, headache, and all the sickness before my period begins so it is hard for me to identify if it's a pregnancy sign or just premenstrual symptoms. so, i suggest you wait until you miss your period, and if you wanna be sure, take a pregnancy test, but make sure you don't take it too early.

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