The baby Lance Armstrong and girlfriend, Anna Hansen are expecting was conceived naturally, a spokeswoman for his cancer foundation confirmed Wednesday.
Armstrong is a former seven time winner of Tour de France after overcoming testicular cancer.
"The baby was conceived naturally," Lance Armstrong Foundation spokeswoman Rae Bazzarre said in a statement e-mailed to The Associated Press.
Armstrong has three children with his ex-wife Kristin that were conceived using in vitro fertilization with sperm he had banked before undergoing chemotherapy.
Image credit: Bauer Griffin