I had my first ultrasound today and think it is fun to try and predict the gender. 170bpm. 8 weeks along stomach ultrasound:) The Basics of The Ramzi Theory. “Ramzi's method is using placenta/chorionic villi location as a marker for fetal gender detection at 6 weeks gestation was found to be highly reliable. This method correctly predicts the fetus gender in 97.2% of males and 97.5% of females early in the first trimester.”what is y'alls take? boy or girl?