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My dating scan is wrong why

Wishing you all a lovely day x My understanding is it can only be wrong through two factors a) you do it too early (before 9 weeks) and male DNA does not show up, so you get a false female result- if you are definitly past 9 weeks (which I assume you are being on this board) then that is not a possibility so you're good on that count B) contamination of sample: taking a sample in a room with male DNA or not washing hands after touching a male, or a male handling the sample equipment can cause a false male result. So if the top one doesn't apply to you then you have a little girl :) congrats!!!!!Of course there is the chance they misread or wrote down the wrong result but I highly doubt it.

This is presuming that the pregnancy is actually at this stage of development.For transvaginal ultrasound you can have an empty bladder Dating scans are usually recommended if there is doubt about the validity of the last menstrual period.For example if you a tiny sac can be seen in the uterus, but the baby and its heart beat may not be detected yet.I think it is more likely to be told girl and then possibly be having boy as, as I understand if they can find no "y" chromosome in the DNA then they automatically say female (XX)..there is a chance that there wasn't enough fetal DNA, therefore no "y" chromosome showing..however, firstly the result should be inconclusive if there isn't enough fetal dna and secondly, yes it happens but would be extremely rare..I have also read somewhere that, if you've had a boy recently I,e, within 18 months then there is a very small chance that there is still a bit of "y" chromosome in your blood so this might give a false male gender result. I've read that too, but my only child so far is a girl.Sometimes a trans-vaginal examination shows that your pregnancy is less advanced than expected.

The earlier the ultrasound is done, the more accurate it is at estimating the baby's due date.

However, the accuracy of the ultrasound examination is always dependent on the skill of the sonographer and the quality of the equipment.

Usually the expected date of delivery (EDD or EDC) is calculated from your last menstrual period - if the early dating scan calculates the EDD to be within 5 days of the EDD from your last menstrual period.

5 ½ weeks gestation means 5 ½ weeks from the first day of the last menstrual period, which is usually about 3 ½ weeks from the date of conception (confusing, isn’t it!

) the fetus is clearly seen on trans-vaginal ultrasound and the heart beat can be seen at this early stage (90 to 110 beats per minute under 6 to 7 weeks, then 110 to 200 beats per minute as the baby matures).

I've done the Chinese prediction calendar, the ring on a strand of hair, the bicarbonate of soda AND the red cabbage test and ALL said boy.