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

Implantation of a Fertilized Egg

by Teresa Shaw |
347 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 290 Comments
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Crystal Apr 17, 2017 10:25:01 PM ET

I have been off the shot for bit, but i had light spotting today and it stopped. what's wrong? i have not had a period for 2 months.

iLona May 11, 2017 08:42:53 PM ET

When i went off the pill i didn't get my period for a year. turns out my prolactin levels were high which caused my body to think it was already pregnant . after going to the doctor i was given bromocriptin and a couple months later i got my .period

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Jess Jan 22, 2017 01:12:35 PM ET

I'm trying to work out if it's implantation or my period. i didn't have any pain to start with but a few days ago my boobs were sore and today is 17 days after my ovulation day. the thing is i was 4 days late. i took a test and it came back negative but last night i started with a little red blood and the small cramps are getting a little more sore and i got that much of a dizzy spell i felt like i was going to throw up. my period cramps are usually so bad i need to take a few nurofen and a heat pack. please help. i really need to know. going to see a doctor tomorrow.

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Mamum Jan 21, 2017 06:27:46 PM ET

Hi all, i had sex on the 31st of december, wednesday the 18th. i had bleeding, quite light. it got a tiny bit heavier on the 19th and was gone on the 20th. i also had diarrhea on the 20th and today being the 21st, could i be pregnant?

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busi Jan 10, 2017 06:34:06 AM ET

Hi.i've done tah and now my husband wants a baby. what can i do?

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Guest Apr 13, 2015 04:59:36 AM ET

I started my period on march 6. what day would implantation begin?

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lee Apr 1, 2015 12:04:31 AM ET

My last period was on 2/10/15 until about 2/15/15 or so. i had sex on ovulation day and now 2-3 days later, i’m having cramps and seeing a little blood when i go to bathroom. i’m not due for period for another 10 days. could i be pregnant?

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muff28 Mar 29, 2015 05:07:22 PM ET

Hi guys. my doctor has me on provera and clomid 50mg. i took the provera from 3/1/15 to 3/10/15. then, my period started on the 3/14/15. then, i started the clomid on 3/15/15 to 3/20/15. my period stopped on 3/19/15. will this medicine work? has anyone tried it?

Ree Apr 9, 2015 01:46:49 PM ET

Yes babe, stay positive, after having four miscarriages and trying to have a baby for 5 years i got referred to the fertility clinic and they put me on clomid 50mg. i deciding that i was going to keep myself busy during the first cycle of clomid, going out with my friends and family as trying to have a baby was starting to take over myself and my partners lives. i thought to myself that it may take a few cycles before i conceived, but by the grace of god, i conceived during the first cycle. i'm not a doctor, but i will tell you to not give up hope. four years on and i have two health girls, 1 years old and 3 years old.

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Guest Mar 17, 2015 06:47:10 PM ET

My last period was on the 12th of feb 2015. i was ovulating was between 5/3/15 and 7/3/15. i had sex when i was at my high fertility. i had sex on 14/3/15, and later that afternoon i was bleeding, which i thought was my period and it lasted 2 days. i've got cramps and i'm on hrt. i've taken 2 tests, both negative. maybe i don't have any hcg detected. help.

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aj Mar 6, 2015 11:03:51 AM ET

I had my last period on the 3rd of feb 2015. myself and my partner had sex on fertile days as we are trying to conceive. i'm late for my next period today. i woke up and went to the loo, and when i wiped, there was a brown stringy like jelly discharge and a hint of pink. i have had no pain like i would during a normal period. i only have slight pain on my right side, which didn't last long. i have also been suffering from headaches and a back ache (lower). i have done a few test before this morning, but they said negative. i have been to the loo a few times during today, and it was light brown. i put a pad on this morning and there is hardly anything on it. just a slight light brown. if anyone has the same thing, or can advise me i would really appreciate it. thanks

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Guest Mar 4, 2015 11:34:28 AM ET

I had a period on 14 feb. i am on siphene and normoz tab as i'm having bu and pcos. i had intercourse from 24 feb to 2 march. is there a chance i'm pregnant? there is a pain on my right side, and also back pain. waiting for reply.

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