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Who could be the father of my unborn baby boy?

I am 6 months pregnant now and I couldn't have a happy pregnancy because of this dilemma. My LMP was on March 16, 2016 (Feb. 4, 2016 was the first day of my menstrual period before my LMP-so I don't know if I have the regular 28 day cycle). So anyway, my due date is on January 4, 2017 according to my ultrasound. On March 23rd, I had unprotected sex with guy A in the evening and guy B in the morning. And on March 27, April 1-present with guy B. Who could be the father of my unborn baby boy? Please help. I can't enjoy this pregnancy because of the mistake I made. I am hoping and praying hard that the father would be guy B.
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134578 tn?1693250592
COMMUNITY LEADER
Well, you have said:

My due date is on January 4, 2017 according to my ultrasound. [In your 13th week.]

On March 23rd, I had unprotected sex with guy A in the evening and guy B in the morning. On March 27, anytime around April 1-3 then April 16-17 and April 23-24 with guy B.

(In short, you did have sex in April.)  If you look up a conception calculator online, or just use a regular calendar and count backwards 266 days from January 4, it counts back to April 13 for an estimated conception date.  

The margin for error is about a week or perhaps up to 9 days, when the ultrasound is as late as the 13th week.  But even counting back 9 days only takes you back as far as April 4, not March 23.  All the sperm from March 23 would have been long gone.
Helpful - 1
8 Comments
This is so helpful, Annie. I appreciate it a lot! Thank you so much! :)
I can now at least have a good night sleep and less stressed.
Annie! I have more questions.. When I was in my 3 months, I cleaned the comfort room using muriatic acid. Could this possibly affect my baby?
No, the only effect would be if you burned yourself, and that would not impact your baby.  You could check this link: http://www.medhelp.org/posts/Pregnancy-Ages-18-24-/Chemical-Fumes/show/784890
Thank you so much, Annie! Last night, before I slept I researched names for my baby boy. I just wanted to say that now I know that guy b is probably my baby boy's father, I felt so happy and even more excited. Thank you for making me feel better, Annie! God bless :)
Annie! One last! I have read this article which states that this girl had sex 1 week after her period got pregnant with a baby boy. That is why I came to think that there is a possibility that guy A can still be the father of my unborn baby boy-just read it last night which bothered me again-I don't know but I can't avoid to think possibilities like this. I know I am just stressing myself but I would like to know if when a girl had sex 1 week after period can lead to pregnancy? Is it possible?
Not if her ultrasound, which saw and measured the actual embryo, says she got pregnant in April.
Thank you so much, Annie!
Avatar universal
Hello Annie! I would like you to know that I gave birth yesterday, December 28, 2016. Though, it's really difficult to recognize if who's the father but I can tell that my baby looks 60% like guy B. I would like to know if my conception date will remain the same even if I gave birth a week before my EDD?
Helpful - 0
1 Comments
The actual day a baby is born does not reach back in time and change the day it was conceived.
Avatar universal
Hi Annie! I had my third ultrasound on December 9 which put me to 35w 3d and it gave a due date January 10, 2017. On June 29,  according to the ultrasound I was at 13w 0d and my EDD is January 4, 2017. And on August 29, EDD is January 11, 2017. So now, I am just wondering if my ultrasound at my 35w 3d can be 3 weeks off? If yes, does it change my ovulation/conception date? Thanks, Annie.
Helpful - 0
5 Comments
Ultrasounds get less accurate for purposes of dating pregnancies as the pregnancy progresses.  Nothing about a January 4, 10 or 11 estimated due date suggests conception in March.
Thank you, Annie. I am just curious because if 35w 3d can be 3weeks off that means I ovulated March 30. Which is the 7th day since guy a.
Thank you, Annie. I am just curious because if 35w 3d can be 3weeks off that means I ovulated March 30 which is the 7th day since guy a.
Your first ultrasound will be most accurate for purposes of trying to date your pregnancy.  Nothing about a January 4 estimated due date suggests conception in March.
Thank you, Annie!
Avatar universal
Annie! Just some clarifications, I got my first ultrasound when I was 15 weeks pregnant based on my LMP. But when I got my ultrasound, on June 29, it says that I'm on my 13weeks. Does this change anything? Because I remember you saying early ultrasounds are more precise than later ultrasounds. I don't know, but by reading some of the situations we have in this forum makes me wonder about it.
Helpful - 0
5 Comments
Your doctor gave you a due date.  That is more important than the "weeks pregnant" estimate and the first day of your last period and everything else.  You had a relatively early ultrasound and it said a due date.  Go with that due date when you do your figuring and your what-ifs.
Thanks, Annie! Guy a kept on texting me telling that he caused my pregnancy 50-80%. Every time he texts me, I always worry and think of the worst. :(
Annie sorry for not telling the whole story but anyway-In the evening of March 11 I had unprotected sex with guy A and with guy B March 12 in the morning. Had my period on March 16, had unprotected sex with guy A on March 23 in the evening and guy B March 24 morning at around 2-3am. I only had sex with guy A 2x on March which was on March 11 and March 23. Anytime around March 24-27, April 1-3, April 16-17, April 23-24 with Guy B.
Hate to repeat what I said above, but I will since you do not seem to remember it.  You have said your due date is January 4, 2017 according to your first ultrasound.

If you look up a conception calculator online, or just use a regular calendar and count backwards 266 days from January 4, it counts back to April 13 for an estimated conception date.  

The margin for error is about a week or perhaps up to 9 days, when the ultrasound is as late as the 13th week.  But even counting back 9 days only takes you back as far as April 4, not March 23.  The sperm from March 23 would have been long gone.
Thank you, Annie! I am just so scared. I will update you when I give birth. :)
134578 tn?1693250592
COMMUNITY LEADER
I got your probable date of ovulation from your due date of January 4.  The estimated ovulation date for January 4 is April 13.  But that would only be this precise if the estimated due date came from early ultrasounds (6th week, 7th week, etc.).  Since your first ultrasound seems to have been in, what, your 14th week GA? there will be a possible margin for error of at least a week, and possibly a larger margin for error from the second.  That was why I was asking where your due date came from.

Anyway fortunately even with the margin for error coming from a later ultrasound, nothing about a January estimated due date suggests conception in March.
Helpful - 0
3 Comments
I got my first ultrasound in my 13weeks. So what do you suggest, is this baby most probably with guy a or guy b?
Does the gender of my baby can be a factor to tell who can be the father is?
Annie, I apologize for having a lot of questions but I am overthinking.. I desperately would like to have an idea who fathered my unborn. :(
134578 tn?1693250592
COMMUNITY LEADER
I keep getting April dates for conception, not March dates.  It doesn't sound like guy A had much to do with anything.  Were you sleeping with guy B around April 13?
Helpful - 0
3 Comments
Nope but did in March 27, anytime around April 1-3 then April 16-17 and April 23-24..
Annie, how did you come up with April 13? Again, I appreciate you response
. Thanks a lot!
*appreciate your response*
134578 tn?1693250592
COMMUNITY LEADER
Have you had ultrasounds in this pregnancy?  How did you get your due date?
Helpful - 0
2 Comments
Yes. I had my first ultrasound last June 29, 2016, it stated there that I am due on January 4, 2017. My second ultrasound was on August 29, 2016 which gave me different due date of January 11, 2016. I am so stressed out, been hoping that guy B would be the father. Please help!
If I will base on the first ultrasound I will be 26w 3d now. My menstrual period is irregular so I don't really know if how many days are my menstrual cycle. But what I observed is I usually have 30-40 days cycle (LMP was March 16 and before that was February 4). My doctor told me, it's difficult to know when did I ovulate or conceived because of irregular period. I can't afford a DNA Prenatal Test right now or  DNA Test. It is so expensive in my country. I hope for another reply, please! Thank you so much, Annie!
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