You can't. Either you got pregnant after having had sex earlier, or the ultrasound operator is wrong.
To try and get pregnant you need to add two weeks (fourteen days) to the FIRST day of your period. You also have a two day window to get pregnant.
The average baby is born in 280 days or 40 weeks.
If you just found out that you are 11 weeks and 5 days pregnant you would have conceived approximately 11 weeks and 5 days ago
The number of weeks is estimated roughly through the development of your baby. If it was conceived 36 weeks ago, it just means its developing a few days before it was expected, it's good news.
4 weeks and 5 days from scan, the first two weeks you are pregnant if the weeks which you are ovulating, technically you are not pregnant then but you still have a egg
you conceived 08/27/2008 .. i am accually exactly as far along as you are! so hopefully that in correct in your case=)
middle of June would be when the baby is conceived
If you know when you conceived you should always go by your date. Ultrasounds, especially later in pregnancy, are not as accurate. Here are the dates that they can be off. The inaccuracy of ultrasound First trimester: 7 days 14 - 20 weeks: 10 days 21 - 30 weeks: 14 days 31 - 42 weeks: 21 days
About 3-4 weeks from your last period if you don't get any in the coming 28 days you are conceived!
At this stage, yes the ultrasound can be off by 10 days. Mine was off by ten days the other way, that is I thought I was 18 weeks and the ultrasound said 16 and a half. I knew when I had conceived because my husband had been away on a trip.
About 280 days or 40 weeks
she would have conceived 3 weeks prior. so Jan 17. even if you didnt have sex on this day, if you had sex within the few days prior, the sperm could live until you ovulated on the 17th.