Aa
Aa
A
A
A
Close
Avatar universal

whos the father

my last period was February 2, 2016, my periods always start the 1-4. I had a one night stand on the 10th of feb (I know terrible)  he didn't use a condom, but used the pull out method!(Please don't bash me) me and my ex boyfriend got back together on the 13th and had unprotected sex the 13,14,15,&16,17 ( apparently we had missed each other, or maybe just really in the mood). I am now pregnant and I've had two ultrasounds and one says I'm due November 8 and the other the 10th I've used a ton of conception calendars and they all said I conceived from feb 12-20. And my ovulation date was the 16, I also asked my dr and she said the 16th as well, but I also read sperm lives in you for 5 days. I just want to know who would be most likely to be the father.
3 Responses
Sort by: Helpful Oldest Newest
134578 tn?1693250592
COMMUNITY LEADER
If an ultrasound sees the embryo and gives you a date, it doesn't matter when your last period was; once you have an ultrasound-based date, don't go home and correct what the doctor says by putting your period into calculators.  Women can ovulate any time, it is not like clockwork no matter what assumptions the calculators use.  Once the ultrasound sees the actual baby, that's it.  Don't mess around with "but my period was ___ and so I ____."  Go with what the embryo measures.

The person who said you were 6 weeks 4 days on March 22 was basically saying that you conceived on February 19.  The person who said you were 11 weeks 1 day on April 20, was saying you conceived on February 16.  Having sex on Valentine's Day would work, since sperm can last 5-6 days in your system (when it stops being "most potent" is a matter of differing medical opinion).  Although none of this is entirely certain, it does seem to greatly favor your boyfriend.

The chance of someone from February 10 still having viable sperm in your system by the 16th is low.  Unfortunately, by the eleventh week of pregnancy, there is a margin for error when using an ultrasound to tell the date of conception; it is +/- 6 days or so.  Meaning, it could be as much as 6 days off.  On the other hand, your sixth-week ultrasound won't be that far off, its margin for error is only +/- a day.  And it is the one that suggests conception on the 19th.  I would go with your boyfriend on this.
Helpful - 0
1 Comments
Thank you for your help!
134578 tn?1693250592
COMMUNITY LEADER
When you had the ultrasound at 7 weeks, what exact weeks count did they say you were (6 weeks 0 days?), and what day was that?  (By "day," I mean, on the calendar, like April 30.)  And did they give you a due date from that ultrasound?  Was it one of the two you mentioned?
Helpful - 0
2 Comments
I went to the hospital on March 22 and they did an ultrasound they first did a tummy one and said she could see him/her but I was still to early, then she did a viginal one said she could see him/her way better since I was still really early. They told me I was 6 weeks and 4 days. But going by my period and calculators I found online I was suppose to be 6 weeks 6 days basically 7 weeks. The 10th nov. then on April 20 I went to my ob and she said I was 11 weeks and 1 day. And I am due the 8th, like all the rest of the calendars told me. i asked my dr when I conceived she said the 16th, the er dr told me the same. my dr said this was a valentines baby cause sperm is only potent for 72 hours. Which I did have sex with my boyfriend on Valentine's Day the day before and after and he ejaculated in me each time.
And the last day of my period was feb 5/6 and my period before then was I think the end of December or the 1st of January i dont know if That helps.
134578 tn?1693250592
COMMUNITY LEADER
Hi, well, your boyfriend has the stronger odds, because you had more sex with him and he ejaculated within your body five times.  This is not to say that the other guy has 0 chance, though.
Helpful - 0
1 Comments
So should I lean more to my boyfriend? I had an ultrasound at 7 weeks well I thought I was 7 weeks but the dr said i was only 6 weeks. And conceived the 16th I'm scared i dont know what To do I know that guy didn't ejaculate in me but I know pre *** can get you pregnant as well.
Have an Answer?

You are reading content posted in the DNA / Paternity Community

Top Pregnancy Answerers
13167 tn?1327194124
Austin, TX
4769306 tn?1568490209
NC
Learn About Top Answerers
Didn't find the answer you were looking for?
Ask a question
Popular Resources
Get information and tips on how to help you choose the right place to deliver your baby.
Get the facts on how twins and multiples are formed and your chance of carrying more than one baby at a time.
Learn about the risks and benefits of circumcision.
What to expect during the first hours after delivery.
Learn about early screening and test options for your pregnancy.
Learn about testing and treatment for GBS bacterium.