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Implantation Calculator

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Implantation occurs when a fertilized egg implants itself to a woman's uterine wall. Use this implantation calculator to determine when implantation most likely occurred based on the days you ovulated. If you know the day you ovulated, please enter the information below to produce more accurate results.

If you know the date you last ovulated, please enter it here.

When did your last menstrual period start?

How many days is your cycle usually?


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Implantation Discussion


Showing 1 - 10 out of 250 Comments
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avi Jan 31, 2019 01:11:52 PM ET

Hi,my last period was on the 02/01/19 and i have a 29 day cycle. my period is due on the 31/01/19 but, on the 29th i saw brown discharge as well on the 30th. but no sign of period blood. can it be implantation bleeding or just my period about to come soon? my period is always on time and no hints of any discharge from before.

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jannah Jan 18, 2019 11:54:19 AM ET

My last period was december 25,2018. i have a 24 day cycle. i don't have my af today. should i wait a couple of days? can i be pregnant? i have my af every 11 or 12 dpo.

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anonymous Jan 14, 2019 08:24:56 AM ET

Hi. my ovulation cycle is from 12/14/2018 to 12/24/2018. i had unprotected sex on 12/16/2018, withdrawal method. i had my period on 1/3/2019. today, 1/14/2019, i had brown cm discharge. am i more likely pregnant? or its just because i am on my ovulation days again or next period? thank you.

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Confused Jan 14, 2019 06:22:59 AM ET

I had sex on the day before my ovulation day and the morning of ovulation. 14 days later, had a spot of blood, followed later the same day by brownish discharge. then nothing. had sex with my man again 1/12 and 1/13 and it looks like my period. i had 2 pos pg test and one pos ovulation test. would i still get my period this month or should i have missed it?

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Cia76 Jan 10, 2019 02:37:54 PM ET

Hello! on 8/13/2018, had my period. i had unprotected sex on 8/21 through 9/1 2018! then my next period was supposed to come on 9/10/2018. didn't get my period. the monday before that, on 9/3, 9/4, 9/5, had spotting then bleeding. when i looked it up, it was implantation bleeding. could i be pregnant? my cycle is always normal, 28 days. i ovulate 14 days. so, when i calculated, i had the spotting then bleeding pink and brown on cycle day 22-24.

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Notsure Jan 5, 2019 08:21:24 PM ET

My last af was december 6- 11 2018. i have normal cycles that may even come a few days earlier then expected. i was supposed to get af again jan. 3 2019. i end up going back to work january 4, 2019 with wiping accompanied by little pink with no flow or pad. woke up january 5 with no sign or anything. tested several times, all day negative.

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Anonymous Jan 5, 2019 03:23:35 PM ET

Hi, my cycle came on nov. 29th 2018 and ended on dec. 3 2018. my ovulation days were from dec. 7 through 11th my next cycle wasn’t due until dec. 25th but, on dec. 23 i was spotting and then the next two days it was bright red. but, there wasn’t any cramping involved. i wanted to take a test on the 1st and it still says negative. when can i take another test, and am i pregnant?

Sally Jan 8, 2019 11:45:06 PM ET

No, that sounds like you're on your period. it's bright red and then the bright red blood actually came on the day you were expecting your period.

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Jadenmommy11 Jan 4, 2019 08:09:11 PM ET

My last period was december 4th and today is january 4th, and no sign of my period. could i be pregnant? what is my dpo? i have regular periods every 28 days, like clockwork. i was supposed to start my period on monday and today is friday. should i take a test today?

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Helpme Jan 4, 2019 09:27:59 AM ET

I have a 32 day menstrual cycle, my period comes on time. i bleed for 7-9 days. i missed my period then, started getting implantation cramps. is it possible to have implantation 13 dpo?

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Subhash Dec 31, 2018 08:17:35 AM ET

Hi. my last period was on nov 8, but on dec 8 i had implantation bleeding and tested on dec 10, but the result was negative. i tested again on 29 dec and the result was negative. why this happening?

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