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2 possible fathers

I have been putting my periods in the app Ovia Fertility since April and it says I ovulated from October 24-30, my period was on October 15-19  on the 24 I had sex with a friend and he pulled out, and uses marijuana heavily then on the 27, 28 and 29 I had sex with my ex boyfriend now I'm pregnant, who would you think the father is??
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134578 tn?1693250592
COMMUNITY LEADER
Yeah, it's OK.  You'd be in your late sixth week by then, still plenty early to get an ultrasound that might help with dating.  If you could get in any time after November 26 that would be good, too.
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Avatar universal
Is December 1st a good day to get one?
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134578 tn?1693250592
COMMUNITY LEADER
Your boyfriend/ex-boyfriend guy has the better chance.  His timing is a little better and he had more opportunities.  But it only takes one sperm to make it to your egg, and pulling out is no method of birth control.  Write back with the ultrasound info, make your appointment right away so you can get in during your sixth or seventh week.
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Avatar universal
Alright thank you, I'll let you know what the ultrasound says, and me and my ex boyfriend were trying but we broke up for a while and I just kept putting the data in the app, and we ended up getting back together. But since he actually came inside me, that gives him a greater chance of being the dad right? I know its not 100% but it seems there'd be a greater chance for him and not my friend.
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134578 tn?1693250592
COMMUNITY LEADER
ps -- Being a heavy marijuana smoker is not contraceptive-level protection.  Sorry.
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134578 tn?1693250592
COMMUNITY LEADER
I don't know why the app would take a period that began on the 15th and tell you that you ovulated on the 24th if your cycles are 28 days long and regular.  Maybe it was telling you a range for having (or avoiding) sex, since sperm can live 4-6 days in a woman's system.  If your cycles are super, super regular, you can assume you ovulate around day 14 of your cycle.  That would put any sex from day 9 on, into range because of the length of time sperm lasts in your body.  That might be why the app said what it did.

Were you trying to get pregnant, is that why you were using an ovulation tracker app?

Anyway, I'm not much of a fan of counting forward from the first day of the last period in order to try to determine paternity, especially if you are trying to split the difference datewise between two guys that are close together.  Women can ovulate somewhat late or early in their cycle compared to average; an app doesn't know.  (You would need to be using ovulation test kits, and even they only measure a rise in a  hormone that triggers ovulation, they don't know exactly when you ovulate.)

All you can do, with the dates this close together, is to schedule an ultrasound in your sixth or seventh week (no later) from the first day of your last period. (In other words, count your first day of bleeding as day 1, count out six weeks or seven weeks from then).  When you get there, just tell them you aren't sure of the first day of your last period (so they won't write it down and give you results based on it) and ask them to tell you from the crown-to-rump measurement of the baby what your estimated due date is.  With that in hand, you can come home and look up a conception calculator online and key in the estimated due date and it will give you an estimated conception date.  Or just count backwards manually on a calendar 266 days from your estimated due date, and it should take you to an estimated conception date.  

Your problem is that the guys were only 3 days apart.  I hope your ultrasound indicates a date late enough that it would be illogical for the first guy to be the dad.  If it indicates anything earlier than the 29th or (I hope) 30th, you still might not know.  But an ultrasound is all you can do now, unless you feel like spending $1700 with the DDC for a prenatal DNA test to determine paternity.  Don't wait to schedule the ultrasound, they are at their most accurate for dating in the 6th and 7th week (counted from the first day of your last period).

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Avatar universal
They average 28 days,  and it says the 29th was the day I was supposed to ovulate. And I have entered my data into other period trackers and they all said the same.
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134578 tn?1693250592
COMMUNITY LEADER
I take it you haven't had an ultrasound yet ... how regular are your periods?  You mention that you have been putting them in an app, but you don't say anything about the results except that the app said you ovulated between the 24th and the 26th.  Are your cycles shorter than 28 days usually?
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