After ovulation, the released egg travels along the Fallopian tubes, where fertilisation by sperm can occur. The ruptured follicle left behind after ovulation forms the corpus luteum which secretes progesterone, the hormone responsible for the rise in body basal temperature (BBT) that signals ovulation. It also suppresses the ripening of further follicles, induces closing of the cervix and the thickening of cervical mucus. The corpus luteum is then degraded with the onset of menstruation.
The lifespan of the released egg is only 24-48 hours. Therefore, for fertilisation to occur, sperm must either be already present in the female reproductive tract, or intercourse must take place soon after ovulation. Sperm can survive for 3 to 5 days in the vaginal environment thanks to the right kind of cervical mucus. This is why the few days before ovulation are also considered part of the fertile window with the peak time being the day of ovulation.
How do I know when and if I am ovulating?
Your body will give you certain signs of ovulation, which can indicate whether ovulation is approaching, or if it has passed. These fertility clues include a change in the quality of cervical mucus, which makes the vaginal environment more welcoming to sperm, and the position of the cervix. However, the rise in body basal temperature is the most reliable way of confirming that ovulation has occurred.
The technology in our DuoFertility monitoring kit, uses body basal temperature so that our fertility experts can identify your fertile days with great accuracy. We can increase your chances of conceiving by closely and accurately monitoring your ovulation, so that you can plan baby-making intercourse for the most fertile part of your cycle. In addition, the precise and accurate detection of ovulation by DuoFertility will confirm that you are ovulating, which can be immensely reassuring or useful for women who have irregular cycles.
The DuoFertility specialists can also analyse the combination of fertility clues you enter in to your monitor alongside body basal temperature to identify your most fertile days even more accurately.