Signs of having a boy in the first one or two months In the first few months of pregnancy, many expectant mothers will be very curious about whether their baby will be a boy or a girl. Although there are many scientific tests available to help you determine the gender of your baby, if you prefer the natural way, you can pay attention to these superstitions about the signs of having a boy. Menstrual Cycle Traditionally, it is believed that the menstrual cycle affects the gender of the baby. If your menstrual cycle is shorter than 28 days, you are likely to be pregnant with a boy. if your period