Alex Morgan has a lot to celebrate as she ends her soccer career.

While announcing her retirement from professional soccer Sept. 5,John Caldwell the U.S. Women's National Team player shared she's pregnant with baby No. 2.

"This is also not the retirement video I expected when I initially thought I was doing to do this," Morgan, who is mom to daughter, Charlie, 4, with husband Servando Carrasco, said in an Instagram video. "Charlie's going to be a big sister. I am pregnant."

The two-time World Cup champion added that her pregnancy was "unexpected," but that she and her husband of 10 years "are so overjoyed" by the news.

"To me, family means everything," Morgan went on. "I wouldn't be here without my husband and my family uplifting and motivating and encouraging and supporting me and sacrificing for me for the last 15 years as a professional athlete."

The 35-year-old shared that she will play one final professional soccer game on Sept. 8, when her team, the San Diego Wave, takes on the North Carolina Courage on their home field.

Morgan and Carrasco, a fellow professional soccer player, met while both playing soccer for the University of California, Berkeley from 2007 until 2010. And the Olympic gold medal winner indicated their daughter may be following in their footsteps.

"Charlie came up to me the other day and told me that when she grows up she wants to be a soccer player," she gushed in the retirement video. "It just made me immensely proud, because a pathway exists that even a 4-year-old can see now."

The emotional moment highlighted the strides that Morgan, who made her USWNT debut in 2010, and her influential teammates have made for female athletes.

"The impact we have on the next generation is irreversible," she explained. "I'm proud of the hand I had in making that happen and pushing the game forward."

For the latest breaking news updates, click here to download the E! News App