Watch Teen's Emotional Realization He's Still Alive

SOUTHFIELD, MI – Through tears, Trevor Sullivan shared with his parents — and now the world — what it felt like to be alive.

“I’m so happy,” the 15-year-old from Southfield said after awakening from a heart transplant operation in November. “I’ve been waiting so long. I can breathe again and talk. I feel amazing. I’ve never felt so good.”

Kimberly Sullivan, Trevor’s mother, told ABC News that it felt to her like Trevor “was better than the day he was born.”

“It blew me away,” she said. “Honestly, for me, I didn’t know what to expect. I kind of thought he’d wake up disoriented and in pain, but instead he woke up happy, ready to go and pleased with what he was going through. He made all the worrying that a mom would do go away.”

The video, which Trevor’ dad, Philip Sullivan, posted on his Facebook page and then shared to the Michigan Gift of Life organ and tissue donor page on Facebook on Jan. 19, has touched the world’s heart. It has been viewed more than 1.5 million times, shared thousands of times and garnered hundreds of comments.

Since the video was posted, it has been picked up by CNN, Inside Edition, People, BuzzFeed and other national outlets, and the family has fielded requests for interviews from ABC News, Ellen DeGeneres and others, according to Hometownlife.com.

Trevor asked his mother to videotape his first few moments of consciousness after the transplant, performed at C.S. Mott Children’s Hospital at the University of Michigan on Nov. 13, 2015.

Trevor told ABC News he would like for everyone in the world to see the video — not to increase his own fame, but because it promotes organ donation and “really makes a difference.

Also on Patch

• ‘The Force’ with Teen Who Needed Sudden Heart Transplant

Trevor had been “feeling sick” for about a year, Philip Sullivan, 43, told ABC News. His parents attributed symptoms he felt on the football field in September 2014 to allergies. He was airlifted on Feb. 12, 2015, to C.S. Mott Children’s Hospital when his heart failed after shoveling snow.

Doctors discovered he had a heart defect and dismissed him in March after placing him on the transplant waiting list.

“Because the heart was so heavy, it weighed really heavy on the lungs, so it was hard for him to be able to breathe and hard for him to walk around,” Philip Sullivan told WWJ.

Then, in November, a donor heart became available.

The Sullivans don’t know much about the donor.

“We know that it was a younger person it came from, with good muscle tissue, a strong heart,” Philip Sullivan said. “It makes us feel really good that he was able to be saved because it was getting really scary. He was going down the wrong path, until we got the call.”

If he could talk to the family of the donor, Philip Sullivan says he would have six words: “Thank you for saving my kid,” he told ABC News.

Trevor is still convalescing at home, but his parents hope he is able to return to Birmingham’s Groves High School in March.

If you’d like to help the family with medical expenses, you can do so below.