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-   -   Lmp or ultrasound? Accuracy (https://www.askmehelpdesk.com/showthread.php?t=728470)

  • Jan 16, 2013, 07:39 PM
    Cecepru13
    Lmp or ultrasound? Accuracy
    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.
  • Jan 16, 2013, 07:42 PM
    J_9
    3 days doesn't make a difference. Dating whether it be by LMP or ultrasound can actually be 2 weeks earlier or two weeks later.
  • Jan 16, 2013, 08:03 PM
    Cecepru13
    Thank you for your reply :).
  • Jan 16, 2013, 10:58 PM
    Fr_Chuck
    Yes, I am overly surprised that they were that close, There is no exact date. The date, either of them could be give or take 2 weeks
  • Jan 16, 2013, 11:02 PM
    Cecepru13
    Quote:

    Originally Posted by Fr_Chuck View Post
    yes, I am overly surprised that they were that close, There is no exact date. The date, either of them could be give or take 2 weeks

    I agree. Could it be that I ovulated later than usual?
  • Jan 16, 2013, 11:04 PM
    J_9
    I don't see how ovulation matters at this point. Your dates are only 3 days off. That's about as accurate as you are going to get.
  • Jan 16, 2013, 11:08 PM
    Cecepru13
    Quote:

    Originally Posted by J_9 View Post
    I don't see how ovulation matters at this point. Your dates are only 3 days off. That's about as accurate as you are going to get.

    I was just curious.
  • Jan 16, 2013, 11:08 PM
    J_9
    Actually 3 days is the most accurate I have ever seen!
  • Jan 16, 2013, 11:13 PM
    Cecepru13
    Quote:

    Originally Posted by J_9 View Post
    Actually 3 days is the most accurate I have ever seen!

    Apparently, the sonographer went on to tell me that she took repeated image shots of the fetal measurements which returned the same 8 week O day measurement. Anyhow I was mostly curious because I was on birth control before I got my last period so I had somewhat of an idea of when my,lmp was either 14 or 15 of June but wasn't sure.
  • Jan 16, 2013, 11:16 PM
    J_9
    Oh, girl! Prior to me becoming a nurse I was on birth control. Used it perfectly along with a condom. Got pregnant not once, but twice.

    At a later age I was told that I was going through an early menopause, my daughter is now 19.

    Even later I went through cancer and chemotherapy. The chemo I had to take makes a woman sterile. That was 15 years ago and my youngest son is now 10. I then became a RN specializing in women's heath.

    As you can see, there is no form of birth control aside from a total hysterectomy or complete abstinence.
  • Jan 16, 2013, 11:21 PM
    Cecepru13
    Quote:

    Originally Posted by J_9 View Post
    Oh, girl! Prior to me becoming a nurse I was on birth control. Used it perfectly along with a condom. Got pregnant not once, but twice.

    At a later age I was told that I was going through an early menopause, my daughter is now 19.

    Even later I went through cancer and chemotherapy. The chemo I had to take makes a woman sterile. That was 15 years ago and my youngest son is now 10. I then became a RN specializing in women's heath.

    As you can see, there is no form of birth control aside from a total hysterectomy or complete abstinence.


    Indeed. Maybe I pick your brain since you have the medical background? Could I have ovulated being that I was on birth control?
  • Jan 16, 2013, 11:22 PM
    J_9
    While it's not common, it is possible. Did you take it at the same time every day? How long were you on it, i.e. how many years/months?
  • Jan 16, 2013, 11:23 PM
    Cecepru13
    Quote:

    Originally Posted by J_9 View Post
    While it's not common, it is possible. Did you take it at the same time every day? How long were you on it, i.e. how many years/months?

    Was only on it for one cycle. Actually started period a day before my last pill.
  • Jan 16, 2013, 11:24 PM
    Cecepru13
    Quote:

    Originally Posted by Cecepru13 View Post
    Was only on it for one cycle. Actually started period a day before my last pill.

    Last pill being an active pill.
  • Jan 16, 2013, 11:26 PM
    J_9
    Oh, well then yes, of course! For the pill to be active at the most peak levels, you need to be on it for at least one month, preferably two before having sex without other forms of contraceptive. Basically you weren't on the pill long enough for it to be effective.
  • Jan 16, 2013, 11:32 PM
    Cecepru13
    Quote:

    Originally Posted by J_9 View Post
    Oh, well then yes, of course! For the pill to be active at the most peak levels, you need to be on it for at least one month, preferably two before having sex without other forms of contraceptive. Basically you weren't on the pill long enough for it to be effective.

    I wasn't. Neve started a new pack because of insurance reasons. Did use condoms but they too aren't foolproof.
  • Jan 17, 2013, 07:57 AM
    Fr_Chuck
    You were basically not on any birth control, the pills while having some effect were not fully active. Condoms have a 3 to 10 percent failure rate as normally used.

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