Charles Dharapak/Associated Press

Their marriage has become the subject of intense speculation and scrutiny amid an embarrassing online sex scandal.

Now, Representative Anthony D. Weiner and Huma Abedin are about to make news of a different kind: they are expecting their first child.

Ms. Abedin, 35, is in the early stages of pregnancy, according to three people with knowledge of the situation.

The pregnancy, which the couple have disclosed to close friends and family, adds a new dimension to questions about the future of their marriage.

Mr. Weiner, 46, has admitted to engaging in salacious online conversations with at least six women over the last few years, including an incident last month in which he sent a photograph of himself in underwear to a college student in Washington state. He apologized to his wife and declared that they had no intention of splitting up.

“We will weather this,” Mr. Weiner said on Monday, during his emotional news conference. “I love her very much, and she loves me.”

But Ms. Abedin, a longtime aide to Hillary Rodham Clinton, has remained silent on the topic as she keeps up a hectic schedule at the State Department.

Ms. Abedin returned to work this week and departed on Wednesday for a trip to northern Africa with Mrs. Clinton.

A State Department spokesman declined to comment Wednesday afternoon.