Ask Experts Questions for FREE Help !
Ask
    lexaq's Avatar
    lexaq Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 2, 2013, 07:08 PM
    Ultrasound accuracy
    I went to the doctor on September 24 and had a transvaginal ultrasound done. They determined I was 9w4d. So about a 10-11w gestational period. My problem is that I had sex with my normal partner on July 6th and on July 7th I was taken advantage of by someone else. I'm pretty sure I had my period around the 16th but I'm worried it was the egg implantation. I then had sex again with my normal partner on July 26th the doctors determined this is the time conception occurred and my due date was April 22nd 2014 I told him the baby was his but I'm so worried it's the other guys. How far off can the doctors be?
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
    Uber Member
    		  
    #2

    Oct 2, 2013, 07:37 PM
    The ultrasound is only accurate to a plus or minus two week period... this is because of the accepted range of variance in fetal development, as well as the fact sperm can be in the body for up to a week before the pregnancy occurs.. Any partner inside that 4 week period can possibly be the father.
    Fr_Chuck's Avatar
    Fr_Chuck Posts: 81,301, Reputation: 7692
    Expert
    		  
    #3

    Oct 3, 2013, 02:09 AM
    The Ultrasound is normally good, give or take a week, but can be off as much as two weeks.
    J_9's Avatar
    J_9 Posts: 40,298, Reputation: 5646
    Expert
    		  
    #4

    Oct 3, 2013, 06:49 AM
    An ultrasound is good for two weeks either way. You are going to have to have a DNA test after this baby is born to determine who the father is.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Accuracy of u/s [ 1 Answers ]

I had 3 u/s first trimester , 6w, 8w, 12w . All with a conception date of around July 2nd-4th . The confusion is I had one period I know for sure on around may 26, next was either implantation or lmp on June 18 , can ultrasounds mistaken my lmp on June 18 when really my lmp was may 26 resulting in...

Lmp or ultrasound? Accuracy [ 16 Answers ]

Which day should I go by? Dated 8 weeks during early ultrasound but according to LMP it should be 8weeks 3 days.Sonographer took several measurements and they all measure 8 weeks.

Accuracy of transvaginal ultrasound [ 3 Answers ]

My boyfriend doesn't want to claim our child as his because I had sex with my ex last Sept28, 2010. But I had my period right after. We had sex (the dad of my son) last Oct10, 2010. I immediately had transvaginal ultrasound the moment I suspected that I was pregnant, which was last Dec16, 2010. The...

1040NR accuracy [ 1 Answers ]

Does IRS review his/her visa status (F-1, E-2 etc), and arrival departure date in their or the INS system when they process tax return? My friend submitted 1040NR this year and she entered wrong visa information that expired years ago on the page5 of her return. Does IRS check to find out if...

Ultrasound gender accuracy [ 2 Answers ]

I had an ultrasound at 12 weeks and was told it was a boy then another at 18 weeks and was told it was a boy again what are the chances of being a girl. Should I have another ultrasound? Also have you heard of the draino test? Is it accurate

View more questions Search