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Avatar universal

are conception dates accurate?

hi, i slept with someone one the 17th dec. then i slept with my new partner on the 20th through out,i had a period on the 27th i got pregnant, they said my conception date was the 30th december, what are the chances of it being the lad from the 17th? pleasee help!!!
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1955408 tn?1328058454
You would definitely need a DNA test. Conception dates and dating scans can be off by a few days, so there's really no way to know for sure.
Helpful - 0
134578 tn?1642048000
If it was a normal period, probably what they said is that your gestation date is 30 December, meaning that your conception date was around the second week of January.  The chance of it being the first guy's baby sounds pretty slim even if they did say December 30 was your conception date, sperm doesn't last two weeks in your system.
Helpful - 0
Avatar universal
They didn't say conception date come to think of it, they just said I was 10 weeks 3 days, and I worked it back to 30th december, everyones sayin you can't get pregnant on your period, proper confused! What's a gestation date? X
Helpful - 0
1955408 tn?1328058454
What's your due date?

It's rare, but it IS possible to get pregnant while on your period.
Helpful - 0
Avatar universal
Really? I had sex from 20th but also before the 17th, I had a 4 day period I think,so if I had sex on 20th up till my period, I could have got pregnant? :/
Helpful - 0
Avatar universal
Due dates 5th october x
Helpful - 0
2042970 tn?1349101655
i conceived 20th december due 11 sept i think your dates might be a little wrong. My dates are normal so how your 1 month later than me but conveived only 10 days later is beyond me. Hope that helps x
Helpful - 0
134578 tn?1642048000
All medical counting of pregnancy is done from the first day of the last period, because that is usually a known date with a visible signal (the starting of bleeding).  This is true even though of course every doctor would tell you that on the first day of your last period, you were having a period, you weren't pregnant yet.  They count from that point (day 1 of bleeding is the first day of the count) and assume you conceive at about day 14, 15 or 16, by that count.  Even ultrasounds use this kind of count.  An ultrasonographer who says "You look to be 10 weeks 3 days pregnant" is saying you're about 8 weeks 3 days since conception.
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1955408 tn?1328058454
Are you sure you didn't have sex after your period. A first trimester ultrasound can be off, but it wouldn't be off by two weeks.
Helpful - 0
2006603 tn?1331329327
I got pregnant while on my period. so its possible. I think it was meant for me to have a baby tho, I was on my period, birth control and used a condom and im 27weeks now lol.

All we can do is guess who the dad is, only a DNA test will tell you for sure, if I had to guess id say the second guy.
Helpful - 0
Avatar universal
Your conception date should be sometime @the beginning of jan....
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Avatar universal
Im due a few weeks after u & i got pregnant towards the end of jan. My cycle.hn is irregular so i didnt have a period in jan..but that when i conceived
Helpful - 0
Avatar universal
Sounds like u,had sex in jan also
Helpful - 0
1756475 tn?1330538713
Oct 5th... great day to be due! thats my birthday.  it actually puts your conception date around New years eve... I always hear about that lovely fact from my parents.  I know how they celebrated new years that year.  
Helpful - 0
Avatar universal
DNA test to be sure.
Helpful - 0
Avatar universal
Wow Sadies!! A period birth control and a condom???  That is amazing! If that is not a miracle then I don't know what is.  Congratulations!!
Helpful - 0
Avatar universal
They go by pregnancy weeks not normal weeks,and yes I had sex after my period but though because they said my conception date was then I didn't they could be later then they said, how come only 8 weeks 3 days and not 10 weeks 3 days I'm confused :/ and yes I had sex in january aswell,
Helpful - 0
Avatar universal
Yea u got pregnant in jan...
Helpful - 0
1955408 tn?1328058454
You got pregnant in January. These are your dates according to the due date they gave you.

First Day of Last Menstrual Period:  *December 30, 2011*
Probable Date of Ovulation: * January 13, 2012*
Possible Dates of Conception: * January 9 to January 17, 2012*
Due Date: * October 5, 2012* (40 weeks)

So whoever you had sex with in January is the father of the baby.

They're saying you would have been 8 weeks 3 days at conception because doctors go by your last period and not conception. So 2 of those 10 weeks you weren't actually pregnant, but since they cannot definitely tell you a conception day they use your last period.
Helpful - 0
Avatar universal
Do you think? I hope so, I really so,I don't think can be off ny 2 weeks, maybe a few days but not weeks x
Helpful - 0
Avatar universal
Jan for sure:) congrats also
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1955408 tn?1328058454
It's definitely whoever you had sex with in January. There's no way the ultrasound would be off by that much.
Helpful - 0
Avatar universal
Thank you everyone, you have been a great help :) and thank you, can't wait for my next scan now :) x
Helpful - 0
1712422 tn?1443337501
I conceived January 13/14 and due date is oct 5/6 so I think your dates are wrong
Helpful - 0
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