Forum Pregnancy tests, ovulation and ovulation tests

When was conception?

5 replies

Alissa25
Hi!

I'm currently around 23 weeks pregnant, but I've been overthinking this, so I thought I'd ask.

My last period started on Feb 15. I usually have a cycle of 32-34 days.
My period lasted from Feb 15 to Feb 19. I had sex on Feb 20, Feb 26, and Mar 5.

Based on my 34-day cycle, I'd be fertile around Mar 3 to Mar 7.
I assume I wasn't fertilized on Feb 20 and think it was Mar 5.

But when I count back and look at how pregnant I am now (22 weeks + 5 days), I always end up with Feb 21, whereas it should really be Feb 15, since that was the first day of my last period.

Where does this Feb 21 come from? Is it because my ovulation isn't around day 14 but around day 19?
(5-day difference)

I hope someone understands what I mean and can give me an answer.

Replies

  1. Niveamam #2

    I totally get you, I’ve had that myself too. Last week even: a late ovulation, on day 18(!!)
    So, it’s possible

  2. Alissa25 started this #3

    So that's why it says 21-02 instead of 15-02?
    I can't think of any other explanation for that
    During my intake, the midwife said, based on your period, I think you're 10+5 weeks.
    I went for the due date scan on May 1st and was then set at 9+6, so a difference of 6 days. That also matches up with 15-02 and 21-02.
    I guess it's due to my longer cycle. I think my due date is actually November 26th, not November 28th as the midwife said. If that's the case, I conceived on March 5th with a 32-day cycle, so that would fit.
    But I couldn't have conceived on February 20th anyway, right?
    And if it were February 26th, I'd be 2 weeks further along, so it must have been March 5th.
    You just have to stop worrying, haha

  3. Niveamam #4

    Haha, us women are just all about the details. And we'd really like to have the right info :-)
    Hmmm...
    Why couldn't it be conceived on the 20th? I think it's totally possible.

  4. Alissa25 started this #5

    My period had just ended then, and it wasn't unprotected sex the other 2 times were without protection haha. And my cycle is always longer, so that's why I don't think I could have been fertilized 1 day after my period.

  5. Niveamam #6

    Ships sorry, logical, I just skimmed over it. No, it wouldn't really work. Then it looks like 05-03 is the answer..

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