(CNN) - The birth mother of a Super Bowl bound NFL player is opening up about the decision to choose adoption for her son.
Heidi Russo lives in the Rockies. Her birth son lives in the Bay area. He's the Super Bowl quarterback for the San Francisco 49erS. She gave up her son when she wound up pregnant at 19 in Milwaukee.
"He was born in 1987 and I had him for six weeks. And then I was fortunate enough and blessed with Rick and Teresa who adopted him." said Colin Kaepernick's Birth Mother Heidi Russo.
Rick and Teresa Kaepernick had two kids, lost two others to heart disease and then found Colin.
It was the toughest decision I've ever made. But for him, it was the right decision. For me personally, I was in a situation that wasn't planned. That certainly wasn't.. I wasn't in a position to give Colin the life that I wanted him to have.
At age four the Kaepernicks moved to California where Rick had a chance to help mold Colin into a 12-letter high schooler.
Heidi says she kept in touch through the years with Teresa and Rick but that contact kind of put her life on hold.
"I couldn't move forward with my life. I'd wait for her letters, wait for pictures... It was really hard. His whole life I thought about him. You know, every birthday, you think about them. You don't just forget." said Heidi Russo.
As the kaepernicks watched Colin grow into man hood, she too is super proud.
"Yeah, Incredibly proud." said Heidi Russo.