Need help figuring out who might be the father

[Mndae11]

So I had sex with 2 people. Guy #1  happened on dec 1 2016 and pulled out unprotected. Guy #2 happened the 4th into the 5th and we done it every day up to the 13th of dec. he ejacukated in me in dec 7-8th. My lmp was nov 22 of 2016 with a normal cycle I was 3 days late for my period and was spotting 20-22nd. I took a test on 22nd and found out test was positive he said I most likely conceived between 5-7th that ovulation date was 5-6th . Dr said I was about 5 weeks.. 3weeks technically.  I have ultra sound on Jan 18th I was wondering who might be the father?

[AnnieBrooke]

Everything you are saying makes it sound like you did conceive between the 6th and the 10th, with it much more possible that you conceived from the second guy.  I'm glad you got ultrasound-based information that is not influenced by your first day of your last period. (The date of the 6th came from the doctor's August 29 due date, which you say was influenced by him knowing when your last period was, and that of course biases the estimate with information that might not help the assessment be accurate.)  You really need to rely on the ultrasound-based assessment, because it sees and measures the actual baby.  I'm glad the tech gave you good, clear information.  From everything you have said, though pulling out is not foolproof by any means, the fact that the first guy did pull out, and the sex was as early as the 1st, and add in what the tech said, all of it strongly suggests the second guy is the dad.  Get a DNA test after the baby is born so you will never have to wonder (and because it is important to know for absolutely sure), but in your shoes I would go through the pregnancy assuming the second guy is the dad.

[Mndae11]

Ok so I had ultra sound in the 18th of Jan and ultra sound tech said I was about 7 wks and 4 days but the doc put my due date as aug 29th- saying 8wks that was based off lmp. Ultra sound tech said I conceived around the 10th of December or so. So would it mean that #2 has a higher chance of being father if we done it everyday from dec 4-dec15 and he ejacukated the 9th into the 10th?

[Mndae11]

Also ultrasound tech had estimate due date of sept 2 which is little bit off from the doctors

[AnnieBrooke]

When you have your ultrasound on the 18th, ask the tech to compute your estimated due date without taking into account when your last period was, only just using the measurements of the baby and its developmental markers.  Get an estimated due date, not just a "weeks pregnant."  Then take home the estimated due date and put it into a conception calculator online, or just count back on a calendar 266 days.  That should give you an indication of which guy has the strongest chance of being the dad.

[Mndae11]

Ok so say if I was due aug 26 of 2017  I counted back 266 days and I got dec 6 which I did stuff around that time 4th onward so would that be guy number 2? Because my other one guy #1was dec 1st. And he didn't ejaculate ..but I know about presperm can possibly be a factor..and I see that it can be in body for at least 72hrs sometimes up to 5 days? Guy #2 didn't ejacukate either till the 7-8th but we done it every day since 4th to 13th. But ok thanks yes I will ask and thank you for the info

[AnnieBrooke]

I've heard 5 or even 6 days for survival of the sperm in the woman's reproductive tract, though some of the research suggests the sperm isn't mighty enough by day 6 to penetrate the egg.

[AnnieBrooke]

It's not "presperm," it is actual sperm, in the pre-ejaculatory fluid.  It would be there if the guy had ejaculated prior to having sex with you, some of it could have remained in his pipes and ridden along on the pre-ejaculate into your body.  Sperm that enters a woman's body that way is still sperm and has the same survival rate of any other sperm.