
How To Determine The Date Of Conception?

Question: Alright doctor i have put myself in a rough spot I got pregnant sometime in January. My period started January 10th. I was expecting my next cycle to start February 2nd. I was with guy number 1 on 15-16-18-20 of January. He ejaculated in me all 4 times. Guy number 2 I was with 23-24-27-29-1st. I know anything before the 23rd is out of question as that would give me a luethal phase of less than 10 days. The second guy did not finish in me any of these times. I know its impossible to know other than DNA 100%. But it most likely has to be guy number 1? And it seems to match up perfect with 14 day luethal phase as my cycle was 23 days 10th-2nd. My first conception date was January 25th. And couple weeks later it changed to the 18th. I think my first conception date was wrong cause I told them I had a normal cycle as in 28 days. Until I looked at my last few period and im at 22-23 day cycles. I guess who is more likely to be the father to my child?
Brief Answer:
As you have rightly mentioned DNA test only can confirm it.
Detailed Answer:
Hi,
Welcome to Healthcare Magic.
I am Dr Ramadevi Wani. I will be answering your concerns today.
Usually the luteal phase is constant and is about 14 days. And based on your notes it is likely that guy number one is more likely to be the father of your baby.
However as you have rightly mentioned DNA test only can confirm it.
Did you have ultrasound at 8-9 weeks pregnancy? The early ultrasounds are accurate. Even it can help to some extent to suggest the father of your baby.
I hope this helps.
If you have further queries, I will be happy to answer.
As you have rightly mentioned DNA test only can confirm it.
Detailed Answer:
Hi,
Welcome to Healthcare Magic.
I am Dr Ramadevi Wani. I will be answering your concerns today.
Usually the luteal phase is constant and is about 14 days. And based on your notes it is likely that guy number one is more likely to be the father of your baby.
However as you have rightly mentioned DNA test only can confirm it.
Did you have ultrasound at 8-9 weeks pregnancy? The early ultrasounds are accurate. Even it can help to some extent to suggest the father of your baby.
I hope this helps.
If you have further queries, I will be happy to answer.
Above answer was peer-reviewed by :
Dr. Chakravarthy Mazumdar


I had one at 6 weeks it said January 24th. At the clinic when I got to my actual doctor she said I was a little more further along than they thought. I am 27 weeks
Brief Answer:
DNA TEST can confirm it
Detailed Answer:
Hi,
Welcome back.
Did you have any ultrasound around 8-9 weeks pregnancy.
The 6 weeks ultrasound is accurate within the range of +/- 5 days.
DNA TEST would confirm it .
I hope this helps. If you have further queries, I will be happy to answer
DNA TEST can confirm it
Detailed Answer:
Hi,
Welcome back.
Did you have any ultrasound around 8-9 weeks pregnancy.
The 6 weeks ultrasound is accurate within the range of +/- 5 days.
DNA TEST would confirm it .
I hope this helps. If you have further queries, I will be happy to answer
Above answer was peer-reviewed by :
Dr. Chakravarthy Mazumdar


Unfortunately I didn't not week 8-9. I had my next week at 12 weeks and 6 days that when she told me I was closer to 14 weeks. When I plug it in online I says I got pregnant 15-21st to be 27 weeks the 24th through 29- would be 25 weeks. Ever sense then its been consistent with the age. Doctor thinks they went by normal 28 day cycle. But if I conceived on the 24th I highly doubt I would have got a positive on the 2nd that's only 9 days and it takes 6 to implant. Around the 20th would just make a lot more sense. But stranger things have happened DNA is the only 100% way. But just from what I know about myself the odds are greatly in favor of guy #1 as he largely out number other guys sperm since the other guy didn't ejaculate his odds are lower greatly.
Brief Answer:
12 weeks ultrasound has similar accuracy.
Detailed Answer:
Hi,
Welcome back.
the 12 wks ultrasound also has similar accuracy.
Most of the odds point towards the guy number one as probably the father of your baby.
Just want to clarify one more thing. With conception on 24 th it is possible to have positive pregnancy test on 2 nd.
I hope this helps.
12 weeks ultrasound has similar accuracy.
Detailed Answer:
Hi,
Welcome back.
the 12 wks ultrasound also has similar accuracy.
Most of the odds point towards the guy number one as probably the father of your baby.
Just want to clarify one more thing. With conception on 24 th it is possible to have positive pregnancy test on 2 nd.
I hope this helps.
Above answer was peer-reviewed by :
Dr. Chakravarthy Mazumdar


Yes. With the right test such as blood test but I had a urine 25miu test doctor told me I should be at least 10 days before that sensitivity could pick it up as hcg starts around 5 and doubles every 48-72 hours. I knew I was pregnant on the 1st. But I wanted to wait to see if I got my period which was due on the second. Also if I conceived on 24th that really shortens my luethal phase?
10-2nd is a 23 day cycle right?
10-2nd is a 23 day cycle right?
Brief Answer:
You have 24 day cycle.
Detailed Answer:
Hi
Welcome back.
The doubling time for HCG is 1.4 to 2 DAYS in early pregnancy.
So sometimes it is possible to have positive urine pregnancy test on Day 10 post ovulation.
XXXXXXX 10 to Feb 2 is a 24day cycle.
If you have further queries, I will be happy to answer.
You have 24 day cycle.
Detailed Answer:
Hi
Welcome back.
The doubling time for HCG is 1.4 to 2 DAYS in early pregnancy.
So sometimes it is possible to have positive urine pregnancy test on Day 10 post ovulation.
XXXXXXX 10 to Feb 2 is a 24day cycle.
If you have further queries, I will be happy to answer.
Above answer was peer-reviewed by :
Dr. Chakravarthy Mazumdar


10-30 is 20 30-2nd is 3? Isn't that 23? I'm sorry I'm just confused now
Brief Answer:
Pl count it yourself
Detailed Answer:
Hi
11-30 is 20 and 10-30 is 21. Count it yourself.
Don't worry about it.
Pl count it yourself
Detailed Answer:
Hi
11-30 is 20 and 10-30 is 21. Count it yourself.
Don't worry about it.
Above answer was peer-reviewed by :
Dr. Chakravarthy Mazumdar


Oh I feel dumb. Haha thank you doctor as that would only make a days difference if that I think it is more likely guy number 1. DNA test will tell me thank you again.
Brief Answer:
Thanks for trusting Healthcare Magic.
Detailed Answer:
Hi,
As of now just stop worrying and enjoy the pregnancy.
If you have any further queries, I will be happy to answer.
With best wishes,
Dr Rama
Thanks for trusting Healthcare Magic.
Detailed Answer:
Hi,
As of now just stop worrying and enjoy the pregnancy.
If you have any further queries, I will be happy to answer.
With best wishes,
Dr Rama
Above answer was peer-reviewed by :
Dr. Chakravarthy Mazumdar

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