When she was 20 weeks pregnant, Florida mom Sarah Whitney was diagnosed with breast cancer.
While talking to her two children, who were 5 and 6 at the time, she told them what was happening, that she would have to take "special medicine" and that she was going to lose her hair.
Whitney then underwent a mastectomy and her first round of chemotherapy—all while still pregnant, according to NWFDailyNews.
So when a photo of Whitney breastfeeding her newborn son, Kal-El, on her remaining breast hit the Internet, people around the world were more than eager to share.
Whitney was only able to breastfeed Kal-El (a nod to Superman's birth name) for two weeks before she underwent another round of chemo and radiation, but she was happy to have those few days as well as every day since his April 21 birth.
"It makes me try to appreciate every moment I have with them," Whitney tells the news site about her kids. "I know there's a risk it could come back. I want to be around for them when they get older and get married and have kids."
Whitney's husband, Michael, has also been a huge support.
An airman at Eglin Air Force Base near Valparaiso, Fla., Michael was able to work from home for a few months after his youngest son's birth.
"My commander's main concern was for me to focus on my family," he tells NWFDaily News. "My squadron was very supportive."
The photograph, taken by local photographer Katie Murray, has made its way around the world. Showing Sarah nursing her son while covering her eyes to cry, the emotional image has appeared on various news sites and is also featured in a GoFundMe campaign to raise money for the family.
Other breastfeeding moms have even reached out to donate their breast milk.
"It's been a hard ride," Sarah tells the Associated Press. "But it's been really rewarding just knowing that he's here and he's perfect, just seeing him smile and laugh every day."