Expecting a new daughter in her family, Tammy Duckworth would be the first in history to give birth while serving as a senator.

The senator told the Chicago Sun-Times that she is six months pregnant with her second child. She is expecting a late April delivery, weeks after her 50^th birthday.

The Illinois Democrat has one daughter, Abigail, born in Nov. 2014 while Duckworth served in the House. Duckworth is one of 10 members of Congress who have given birth while in office.

“I feel great,” the senator told the Sun-Times.