"It was really, really bad, and I rewrote my will," she said to Wright in a clip posted by "Extra" on Monday.
"At a point that I thought it was over for us, I called my best friend and I said, 'I just need you to tell Willow how much I love her,'" Pink continued. "It was really really scary and really bad."
The three-time Grammy winner even thought about her legacy and what she would be leaving behind for her children.
"As a parent, you think, 'What am I leaving for my kid? What am I teaching them? Are they going to make it in this world? This crazy world that we live in now.'" Pink said. "'And what do I need to tell them if this is the last time I ever get to tell them anything?'"
In May 2020, Pink wrote an essay for NBC News and detailed her experience with the virus.
"Battling Covid-19 along with my 3-year-old son was the most physically and emotionally challenging experience I have gone through as a mother," she wrote at the time. "Weeks after receiving our test results, my son was still ill and feverish. It was a terrifying time, not knowing what might come next."
Last April, the "Cover Me In Sunshine" singer revealed on Instagram that she and her son had tested positive for Covid-19, but had since recovered. In the post, Pink announced she would be donating $1 million to healthcare workers. Pink pledged two $500,000 donations, including one in which she pledged in tribute to her mother.