Keeping track of ovulation can also increase your likelihood of conceiving at all (regardless of sex) because women are usually the most fertile in the few days prior to ovulation. [7] X Research source Other signs of ovulation include abdominal pain, changes in vaginal fluids, and changes in basal body temperature. Consider tracking your cycle carefully on a calendar in order to understand how your body responds to ovulation. [8] X Trustworthy Source National Health Service (UK) Public healthcare system of the UK Go to source

There is an alternate theory known as the “Whelan Method” that suggests that sex should take place 2-3 days prior to ovulation to conceive a girl and 4-6 days before ovulation to conceive a boy. [10] X Research source

Though highly effective, the procedure is costly and invasive, and it raises ethical dilemmas about the appropriateness of sex selection of embryos. In fact, sex screening is banned in some places. Certain countries, like Britain, make exceptions only when there is a medical necessity to screen for sex, such as sex-specific genetic diseases. [18] X Research source Other doctors similarly support post-fertilization sex selection in cases of medical necessity, but reject post-fertilization sex selection practices because of personal preference. The procedure works by identifying the sex of an embryo while it is still in the lab before it is placed in the womb, and claims 100% accuracy.