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

Implantation of a Fertilized Egg

by Teresa Shaw |

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.


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.

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Showing 1 - 10 out of 286 Comments
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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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Donna Mar 4, 2015 01:22:19 AM ET

Hi everyone. okay the last day of my last period was on february 24th, and 3 days later i started getting a brownish discharge only when i would wipe. it lasted me 3 days only though. i was wondering if maybe it was implantation? maybe pregnant? help!!!!

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design Mar 3, 2015 03:36:27 AM ET

I had my period on the 11 of feb 2015, and i took fertomid-50 on the second day of my period. from the 20th to 22nd of feb, we had sex. is there a possibility of getting pregnant?

Natasha Mar 16, 2015 03:55:24 PM ET

How long are your cycles?

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confused Mar 2, 2015 08:31:06 AM ET

I usually come on my menstrual period heavy around the 7th. my period came in january real late, but i did have some bleeding. a little later that month, i missed all of feb, and now i'm very sick. but, i had also had the same symptom in early jan. i wasn't able to go in for work. do you think i could have been pregnant at that time?

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DeadAngel Feb 26, 2015 08:27:12 PM ET

Hi. i started my last period on february 8th, and ended my period on february 12th. then, on february 24th, i had some spotting for only a few hours. it was a pinkish brownish color. what could this mean?

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