Ob-Gyn questions? Ask a gynecologist online.
Hi, Thanks for asking for me. I can help you with this.
To come up with best conception range, the ultrasound done between 7 and 10 weeks of gestational age is most accurate.
You had one done on July 22nd at gestational age 8 weeks 5 days. Using that measurement, the most likely day of conception is July 5th with a range of July 2nd to July 8th. Because sperm can easily live for 3-5 days, sex as early as June 27th could have resulted in this pregnant. Rare reports of sperm living as long as 7 days so if we consider that, it could be from sex as early as June 25th.
So sex from June 25 to July 8th could have resulted in this pregnancy. The further away from that range the sex you're worried about is, the less likely that's the father. What days are you worried about? Depending on how far away from that range, we can say 100% or not.
Sorry I made a big mistake and meant June all along instead wrote July. I was distracted and apologize.
Ok, you wrote some wrong dates too!! We were both off. So let's start over.
Let's be clear.
You had an ultrasound July 22nd showing 8 weeks 5 days. So most likely conception date is JUNE 5th with a range of JUNE 2nd to JUNE 8th as being most likely.
When was the dangerous sex you don't want?
If it was after June 11th you're good.
Really the biggest error possible with an ultrasound done during the 8th gestational week is 5 days. So June 10th is really the latest possible conception date.
How regular are your cycles? From the 1st day of one to the 1st day of the next, is it 28 days?
This timing is really tight. I don't think I can say 100% unfortunately. The 2nd ultrasound pushes the conception even closer to the 11th-12th. I think you'll need paternity testing. It's just too tight to be 100% sure with just the ultrasounds and last period to go by. The paternity testing can be done with your blood and a swab from one of the guys.
No need to wait. Yes it can be done discretely with the cooperation of just one of the men. Go to the website of the state you live in and put "paternity testing" in their search engine. You should be able to find info about reputable labs that do such testing. It will require just a blood draw from you and a swab from the cheek or blood draw from just one of the men. Perhaps the man from June 11-12 will be willing?
Any other questions?
The HCG doesn't help. The range is too wide. The ultrasound is the most accurate. And it's showing that the timing is really too tight to be able to say 100%. I'm sorry about that. But in this situation paternity testing will be needed. Anything else I can help with? I wish it was clearer.
If no more questions, please leave a rating for my service. I aim for excellent and appreciate your feedback.
Sorry I didn't see that follow-up question until now because we both posted at the exact same time.
The egg lives for 24-48 hours but sperm can live for 3-5 days with rare reports of up to 7 days. So the range of possible sex days that can result in pregnancy is usually around 3-5 days but can be as long as 7 days.