News of the pregnancy, which was first reported by the New York Times, comes as the couple has vowed to stay together despite Weiner’s admission of risqué online chats and photo swaps with at least six other women.
"I love my wife very much, and we have no intention of splitting up over this," Weiner said Monday during a press conference.
Weiner and Abedin were married in a New York ceremony officiated by former President Bill Clinton nearly 11 months ago.
Abedin, 35, an aide to Secretary of State Hillary Clinton, is currently traveling with her boss on an overseas trip, stopping first in Abu Dhabi and continuing to various stops in Africa.
Weiner, 46, remains in New York where he has been reaching out to Democrats to apologize for his behavior and try to save his professional career as a growing number call for his resignation.