After years of trying to conceive, my husband and I were overjoyed when we found out I was pregnant with a healthy baby boy. I had an easy pregnancy, and we welcomed our son, Brayden, into the world on April 5, 2014.

As any mom or dad will tell you, little babies change lives in big, significant ways. So when I got a sore throat a month into parenthood, I brushed it off because I had more important matters to tend to. When the...