We all assume that childbearing is just something that's going to happen naturally, but this isn't always the case.
"The most common fertility concerns are decreased egg quality in women between the ages of 37 to 45 years," says Dr Paul Le Roux, a specialist in reproductive medicine and the CEO at the Cape Fertility Clinic.
"There are also many couples with a male factor problem and sperm counts seem to be decreasing on a global level, possibly due to toxins in the environment," he says.