Sen. Tammy Duckworth of Illinois announced Tuesday she's pregnant with her second child, making her the first sitting senator to give birth while in office.
The Democratic senator is due in late April - just weeks after her 50th birthday, her spokesman said.
"Bryan and I are thrilled that our family is getting a little bit bigger, and Abigail is ecstatic to welcome her baby sister home this spring," Duckworth said in a statement.
Duckworth is one of 10 women to give birth while in Congress, but will be the first sitting Senator to do so. Her daughter Abigail was born in November 2014 while she served in the House.
Senator Tammy Duckworth
Senator Tammy Duckworth
WASHINGTON - JANUARY 7; Helicopter pilot Major Ladda Tammy Duckworth, of the Illinois National Guard in Chicago, IL demonstrates the improved use of her right arm as she talks to DAV member and Vietnam Veteran Don Sioss about her injuries and treatment as members of the Disabled American Veterans visit wounded soldiers who have recently returned from Iraq and are now at Walter Reed Army Medical Center in Washington, DC on January 7, 2005. Major Duckworth said she is interested in flying again. (photo by David S. Holloway/Getty Images)
VILLA PARK, IL - MARCH 21: Tammy Duckworth, Democratic candidate for the 6th congressional district in Illinois, campaigns with U.S. Senator Dick Durbin (D-IL) at a commuter train stop March 21, 2006 in Villa Park, Illinois. Duckworth, a former Army helicopter pilot who lost both legs in a 2004 rocket-propelled grenade attack in Iraq, is running for the House seat occupied by retiring GOP Rep. Henry Hyde. (Photo by Scott Olson/Getty Images)
CHICAGO - FEBRUARY 4, 2006: At her campaign headquarters, Iraq war veteran Tammy Duckworth shares a moment with her husband Illinois Army Guard Capt. Bryan Bowlsbey. Maj. Ladda 'Tammy' Duckworth, 37, spent nearly a year at Washington's Walter Reed Army Medical Center. She is an Illinois National Guard helicopter pilot who lost both legs and full use of her right arm when a rocket-propelled grenade hit her Blackhawk in a 2004 attack in Iraq. She is running for U.S. congress and hopes to succeed retiring Rep. Henry Hyde, a Republican who has held a House seat for more than 30 years. Duckworth must first beat two other Democrats in a primary and then take on Peter Roskam, a Republican state senator in the GOP-leaning district. (Photo by Andrea Bruce Woodall/The Washington Post via Getty Images)
CHICAGO - OCTOBER 19: Sixth congressional district Democratic Candidate Tammy Duckworth (L) shakes hands with her Republican opponent Peter Roskam prior to a debate October 19, 2006 in Chicago, Illinois. Moderator Steve Edwards sits between the two. The candidates are running for the seat being vacated by Henry Hyde (R-IL). (Photo by Scott Olson/Getty Images)
Hoffman Estates, UNITED STATES: Democratic Party candidate for US Representative from the 6th Congressional District of Illinois Tammy Duckworth, an Army helicopter pilot who was injured in Iraq losing both legs, talks with supporters 14 October 2006 after a town hall breakfast at the Local 839 Carpenters Union hall in Hoffman Estates, Illinois. On 12 November 2004, Duckworth was co-piloting a Black Hawk helicopter north of Baghdad when a rocket-propelled grenade struck the cockpit of her aircraft and exploded costing her both legs and shattering her right arm. AFP PHOTO/JEFF HAYNES (Photo credit should read JEFF HAYNES/AFP/Getty Images)
DENVER - AUGUST 26: Tammy Duckworth, Iraq war veteran and director of the Illinois Department of Veteran Affairs, enjoys the proceedings during day two of the Democratic National Convention (DNC) at the Pepsi Center August 26, 2008 in Denver, Colorado. U.S. Sen. Barack Obama (D-IL) will be officially be nominated as the Democratic candidate for U.S. president on the last day of the four-day convention. (Photo by Chip Somodevilla/Getty Images)
Congressional candidate Tammy Duckworth from Illinois approaches the podium at the 2012 Democratic National Convention at the Time Warner Cable Arena in Charlotte, North Carolina, Tuesday, September 4, 2012. (Harry E. Walker/MCT via Getty Images)
WASHINGTON, DC - MAY 19:
Rep. Tammy Duckworth, D-Il, talks about the problems plaguing the Veterans Administration in her office in the Cannon Building May 19, 2014 in Washington, DC. Duckworth lost both legs in the Iraq War when the Blackhawk she was piloting was shot down in 2004.
(Photo by Katherine Frey/The Washington Post via Getty Images)
CHARLOTTE, NC - SEPTEMBER 04: Illinois nominee for Congress Tammy Duckworth speaks during day one of the Democratic National Convention at Time Warner Cable Arena on September 4, 2012 in Charlotte, North Carolina. The DNC that will run through September 7, will nominate U.S. President Barack Obama as the Democratic presidential candidate. (Photo by Joe Raedle/Getty Images)
PHILADELPHIA, PA - JULY 28: U.S. Representative Tammy Duckworth (D-IL) delivers remarks on the fourth day of the Democratic National Convention at the Wells Fargo Center, July 28, 2016 in Philadelphia, Pennsylvania. Democratic presidential candidate Hillary Clinton received the number of votes needed to secure the party's nomination. An estimated 50,000 people are expected in Philadelphia, including hundreds of protesters and members of the media. The four-day Democratic National Convention kicked off July 25. (Photo by Alex Wong/Getty Images)
US President Barack Obama (L) stands with Congresswoman Tammy Duckworth, D-IL, (R) during a Coordinated Victory Fund Event in Chicago, Illinois, October 9, 2016. / AFP / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
Senator Tammy Duckworth (D-IL) carries her daughter Abigail during a mock swearing in with U.S. Vice President Joe Biden during the opening day of the 115th Congress on Capitol Hill in Washington, U.S., January 3, 2017. REUTERS/Joshua Roberts
WASHINGTON, DC - JANUARY 3: U.S. Sen. Tammy Duckworth (D-IL) participates in a reenacted swearing-in with U.S. Vice President Joe Biden in the Old Senate Chamber at the U.S. Capitol January 3, 2017 in Washington, DC. Earlier in the day Biden swore in the newly elected and returning members on the Senate floor. (Photo by Aaron P. Bernstein/Getty Images)
U.S. Senators (left to right) Joe Donnelly (D-IN), Tammy Duckworth (D-IL), Orrin Hatch (R-UT), Majority Leader Mitch McConnell (R-KY), Lindsey Graham (R-SC), Ben Cardin (D-MD), and Tim Kaine (D-VA) meet with Iraq's Prime Minister Haider al-Abadi, center, on Capitol Hill in Washington March 21, 2017. REUTERS/James Lawler Duggan
UNITED STATES - JANUARY 11: Sen. Tammy Duckworth, D-Ill.,listens during the confirmation hearing for Secretary of Transportation nominee Elaine Chao in the Senate Commerce, Science and Transportation Committee on Wednesday, Jan. 11, 2017. (Photo By Bill Clark/CQ Roll Call)
UNITED STATES - MARCH 15: Sens. Pat Toomey, R-Pa., and Tammy Duckworth, D-Ill., make their way to a vote in the Capitol, March 15, 2017. (Photo By Tom Williams/CQ Roll Call)
WASHINGTON, DC - NOVEMBER 07: Sen. Tammy Duckworth (D-IL) (C) talks to reporters with Senate Minority Leader Charles Schumer (D-NY) (L) and Sen. Brian Schatz (D-HI) following the weekly Democratic policy luncheon at the U.S. Capitol November 7, 2017 in Washington, DC. The Democratic leaders were critical of the proposed Republican tax cut and reform legislation that is now working its way the House. (Photo by Chip Somodevilla/Getty Images)
Discover More Like This
BACK TO SLIDE
"I feel great," Duckworth, who is a little over six months pregnant, told the Chicago Sun Times.
She told the newspaper she underwent multiple in vitro fertilization cycles and had suffered a miscarriage in 2016 while trying to convene again after having her first child.
Many of Duckworth's Senate colleagues congratulated her on her pregnancy.
"Congratulations to my friend @SenDuckworth! Proud to have her as my Illinois colleague and prouder still that she will make history by being the first U.S. Senator to have a baby while in office. I couldn't be happier for her," Sen. Dick Durbin (D-Ill.) tweeted.
"Congratulations to my friend and colleague @SenDuckworth!" Sen. Cory Booker (D-N.J.) tweeted.
"Such wonderful news! Congratulations @SenDuckworth!" Sen. Kamala Harris (D-Calif.) tweeted.
Duckworth, an Iraq War veteran who lost both her legs during combat in 2004, recently made headlines when she called President Trump a "five-deferment draft dodger" and "Cadet Bone Spurs" after he blamed Democrats for the government shutdown.