Article continues below advertisementGwen Stefani is opening up about a deeply personal moment that she believes led to the birth of her youngest son, Apollo Rossdale.Article continues below advertisementDuring a recent conversation with "Hallow: Prayer & Meditation," the singer reflected on the spiritual experience she had before conceiving Apollo at age 44 - something she now calls a "miracle." The No Doubt frontwoman, who is a practicing Catholic, recalled speaking with a man she once worked with who had gone through his own spiritual transformation.