Conception Calculator: Find Your Conception Date
Medically Reviewed by Dr Afzaal Ahmad
Table of Contents What is a Conception Calculator How Does It Work? How is the Conception Date Calculated and What is it Based On? Facts about Conception Calculating based on your Estimated Due Date Calculating Based on your LMP Calculating Based on Ovulation Dates/Fertile Period Calculating Based on your Ultrasound What Can Affect Conception Dates Is the conception calculator practical? FAQ’s What is a Conception Calculator A pregnancy conception calculator can help you determine when your baby was conceived, based on a few different factors such as the first date of your last menstrual period (LMP), the due date of
Conception Calculator: Find Your Conception Date
About The Author
Daniella Hall
Mom to an amazing and crazy toddler, Aaron, with a passion for women’s health and wellness. One the side she also loves being outdoors, baking and creating cooking videos with Aaron
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Hi I had unprotected sex on November 7th had my last period October 27th my boyfriend actually nutted inside of me am I pregnant??
There is a chance that it might happen since you had an unprotected sex so close to your ovulation.
hi, please help! my LMP was on the 21 November 2017 I had sex with partner A on the 24_25,26,November and partner B on 29,30,and 1,2,3,4 December my baby is already born on 7 august 2018. who is the father? help please
That is a really delicate question to be answered on a forum, I can’t be sure cause nothing is 100%, but its more likely that its the person B.
My last period date was on the 27th or 28th of June in 2019 I had sex on the last day of my period on the 30th and sometimes after July 4th with partner A and with partner b I had sex on the 13th of July in 2019 I went to the doctor on August 12th and was 6 weeks pregnant and and some days which partner could be the father oh and partner A didn’t pull out but partner b did pull out
We can’t be sure, but most probable conception days are on Jul 10 – Jul 15.
If conception takes place on 26 of March when is the due date.
Your baby’s estimated due date is on or around
Tuesday, december 17, 2019 🙂
Trying to figure out father.. I had intercourse with a man September 13th, and the next exactly two weeks later. But I’m measuring at 7 weeks which puts me getting pregnant September 15th. New to all of this and didn’t know how the calculations worked. Spotted only for a day lightly after having sex with the first one.
Hello Broke, it is easiest to see when was you in your fertile window, cause those are the days that there is the most chance of getting pregnant. If you calculated September 15th, it can easily be the September 13th cause that can’t be exact in one day or two.
I had sex with mr a on May 8 the next day may9 I got my period which lasted for 4days (may9-12) after my period I had sex with mr b all through till June now am 5months and 24days who is the father Mr a or b
Hello Ella, although it is possible to get pregnant in the days leading up to your period, it isn’t likely.
You can only get pregnant during a narrow window of five to six days a month.
Hi i found out i was pregnant via a clear blue test on the 02/11/19 it said i was 3+ weeks. The reason for the question is because I’m very irregular. And I had a break from my partner (a) we lived together and had regular intercourse. But I went on holiday from the 15/10/19 until the 28/10/19 and had sex with someone else i’m so confused as to who the father might be I’m considering abortion sadly. As it’s not fair on the baby as i would like it to be partner A ideally. Also my due date is estimated around 8/06/20 making me around 2 months pregnant please can someone work this out. I would really appreciate it.
Hello Lee, due to your due date:
The most probable conception dates are: Aug 14, 2019 – Aug 18, 2019
Most probable dates of sexual intercourse that led to the pregnancy: Aug 11, 2019 – Aug 18, 2019
MY lmp was on the 24th of march i had unprotected sex on the 31st of march and on 1 april my ex forced himself on me without a condom and i still had sex with my boyfriend on the 6 and 7 of april
who is likely to be the father
Hello Kim, i can only say that your fertile days were just around the 7th of April, so its more likely that you became pregnant in that time window.
hi recently partner (A) and I took a break. I had protected sex with partner (b) on July 21st, and later on that day I got my period. Period July 21- July 24. After, partner A and I got back together and have had sex ever since. I took a pregnancy test on the 23 and it came out positive. When I went to the doctors they said I was 6 weeks and 2 days. When I asked they said I probably conceived around Aug. 4th but I/m confused and would like to know which partner would be the dad.
Hi Alex, you would most likely have conceived from July 31st to August 4th, so yes this sounds correct. So most likely partner A would be the father. The only way to know for sure however is a DNA test when the baby is born.
hello
I had my LMP 24th July had sex with partner (a) on 11th and 12th Aug then partner (b) 15th aug I am due on 29 April 2020 who is likely to be the father?
Hi there, according to the calculator you would have ovulated from the 3rd to the 11th of August based on your LMP and your EDD. So it sounds more than likely that Partner A would be the father. However the only guaranteed way to determine that is by getting a DNA test once the baby is born.
My lmp started on February 16th of this year, i had sex with partner (A) on February 21st-24th… & had sex with partner (B) on February 26-March 2nd. My conception date due to my ultrasound is March 2nd & my due date is November 23rd. Who is the father
Hi Kelsy, based on the information that even you provided, Partner B would most likely be the father. The only way to determine this with a 100% guarantee is to get a paternity test when the baby is born.
Hi I started my period on the 28 of June, had sex on the 6th of July which my partner withdraw I went for scan and found out am 6 weeks pregnant can you please explain how?
Hi Abosede, the pullout method is not something that is reliable for pregnancy prevention. There is still pre-ejaculation which does contain viable sperm. That can and obviously did result in a pregnancy for you. Congratulations.
Help!! I was on a break with my partner (A) and had sex with partner (B) on November 9-11th. Then partner (A) November 14th, 15th, 25th, 26th. I had my period on November 21st with my cycle always being regular and took a pregnancy test on November 27th which was negative. I got my first positive pregnancy test on December 14th. My first ultrasound was January 7th and I was between 7-8 weeks pregnant. I understand it looks like a no brainer and partner (A) would be the father but someone please confirm this for me!!
Hi Haley, if you had your period on the 21st of November and got a positive on December 14th, then whomever you had sex with after your period on the 21st of November would most likely be the father. Your 7-8 weeks is generally based on your last period. Hopefully this helps. But it does’t seem like any of those days that you listed would have been the timeframe in which you actually conceived it would have been in the beginning of December from roughly November 30th to December 4th.
Hi, I started menstruating on the 19th January, I had sex on the 25th of January. I am due for the 21st of October 2019. How is it possible that I fell pregnant so close to finishing my period?
Hi Kamo, sperm can live inside the womans body for 5 days. This means that having sex on the 25, your fertile period was roughly 4 days away. The sperm could have survived inside the body for that long.
Hi there.. I started my period on 1st-5th of October 2018 and I had sex 2 weeks after my period. On November I didn’t have my period back and then I started visiting clinic on the 9th of January, then they told me that I’m 14 weeks pregnant and my due date according to my LMP will be on the 8th of July. But still I’m not having my baby. Yesterday I went to scan and the doctor said I’m 36weeks pregnant. Help… Is this possible?
Hi Ayanda, Yes it is possible. Everything is an estimate which is why it’s called and estimated due date when it’s based on pretty much any method. While it could be that you conceived a bit later it’s possible that you were miscalculating. Plus the baby appears to be a decent size so I wouldn’t worry unless they are finding other complications. Good luck!
I had my period on the 4th june, sex on the 16th June, morning after pill (ellaone) on the 18th june, slept with guy 2 from 19th-26th daily. took an ovulation test on 23rd june this is a week later than it should have been, I assuming because of the ellaone., positive. would Guy 2 would be the dad?
Hi, according to the calculator your fertile period would have been from the 14th through the 18th. So it could be either of them. It’s also possible that the morning after pill didn’t work. It’s most effective within the first 24 hours and you took it two days later. The only way to know for sure is to get genetic testing done.
even though I ovulated a week later than I was due to, due to ellaone? neg ovulation test up until then and only positive for one day 23rd june. ella one is effective for 5 days.
Hi Natz, yes it could be either one of them. The only way to know for sure is by DNA testing.