The first lasted the entire nine months and the second five months. Some also say that pregnancy hormones change how certain foods taste and smell to you during pregnancy meaning something you would never have touched before all of a sudden is very appealing. They say that if you find yourself reaching into the pantry or raiding the fridge like a teenage boy home from college for the holidays then you may in fact be expecting a boy. A CVS test is typically performed somewhere between weeks 10 and This test isn't without risk, however, and isn't performed simply to determine the sex of your baby. Any possible diagnosis you receive should be confirmed with further testing. Instead, they screen for possible genetic abnormalities. However, don't rush out to buy pale blue onesies just yet as this method of predicting a baby's gender is not fool proof. This indeed could be related to the level of testosterone which is surging through your pregnant body. Studies have shown hCG human chorionic gonadotropin, the hormone responsible for the second line appearing on a home pregnancy test is higher for female fetuses compared with males, and remains higher throughout pregnancy. In my case, yes this was another pregnancy symptom that easily predicted my baby's gender. I'll be honest, on both my girls, I didn't have a Linea Nigra at all. The surge of hCG early in pregnancy is one explanation for the less desirable symptoms of pregnancy, such as nausea and sickness. Are pregnancies with girls and boys different? In fact, boys and girls look relatively the same four to six weeks after gestation. A fascinating study looked at the emotion of disgust and how it differs according to the sex of the baby. There is no existing evidence that proves this method works however and I for one am a little dubious.