mummies, those who are interested to make an early guess at gender, pls take note to ask your gynae to indicate which side is left or right on your scan the next time. it must be done before 8 weeks.
there is a ramzi gender prediction theory which is supposed to be 97% accurate. the theory worked for my #1 boy. and my #2 is a girl based on the theory (yay!)
the following passage, i copied from another forum, read it if you are interested:
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I am simply fascinated by this study on placental position in early gestation to predict gender. The study included 5000 pregnancies and the method was found to be successful in predicting gender in 97% of the pregnancies.
Here's the link:
http://www.obgyn.net/ultrasound/ultrasound.asp?page=/fm/articles/fetal_gender_placental_location
A couple of things you should know:
1) The study is based on the fact that when the blastocyst divides into embryo and placenta, there is a genetic difference in males and females that cause the make placenta to form to the right of the gestational sac and vice versa for the female.
2) In early scans, 6-8 weeks, the fetal pole is still very small and very closely attached to the future location of the placenta - so, while we can't actually see the placenta without color doppler, we can guess that the cord is attached where the placenta will be. This is the chorionic villi.
3) This has nothing to do with a) which ovary you ovulated from; b) which side of the uterus the egg implanted into; c) where you feel kicking or cramps; d) where your placenta is at 8 weeks on.
4) Ultrasound equipment allows the user to switch the view from transverse (left to right) to sagittal (up and down) and from left to right and vice versa. In a dating scan, there is no need to flip the image and usually we can assume that the left side of your printed image is the right side of your body - but it's best to ask when your scan is being done. Otherwise, all bets are off. If it is flipped, the prediction will be opposite. The sonographer can flip the image for both a transvaginal scan or a abdominal scan. For some medical scans, the image is flipped to follow a medical convention - for instance, fetal head to the left, etc - to help the doctor orientate themself when looking at the scan. Since this is usually not indicated on the scan itself, just ask the technician or better yet, have them label your image.
It makes no difference if your image was taken vaginally (internal) or abdominally. The whole "one is mirrored and the other is not" is not correct.