The second week after your last period corresponds to what is called a woman’s fertile period. For those who have a regular cycle composed of 28 days, the 14th day after your period is the apex of said fertility. However, it is essential to remember that, in total, this phase lasts around 6 to 7 days. Having said that, you should consider both the three days before and after the 14th day – This is vital to know, seeing as the sperm can live inside the woman’s body for up to 5 days. During this stage, think about how your entire body is preparing itself to have a baby. The uterus undergoes profound modifications to receive the future developing embryo. Your internal lining, called the endometrium, becomes thicker and more vascularized due to the hormones produced by the ovaries.

Every month, anywhere from 100 to 150 eggs begin to mature inside sacs filled with a protective fluid, called follicles. Generally speaking, only one of the eggs will develop enough to be ready to leave the ovary and travel through the uterine tubes in search of the sperm – the long-awaited moment of fecundation during sexual intercourse – and then later it will implant into the uterus. If the egg isn’t fertilized after a 24 hours after it leaves the ovaries, it’ll “die,” the follicle will dry out, the uterine membrane breaks off, and, after a couple of days, menstruation arrives once again.