No, Jacqueline MacInnes Wood is not pregnant. Her character, Steffy Forrester, on The Bold and The Beautiful is pregnant. The father of her baby is Liam.
When Steffy found out she was pregnant, she went to tell Liam and found him in bed with Hope. Hope and Liam were engaged to be married, but Steffy succeeded in breaking them up and Steffy and Liam are now planning their wedding.
Wood has played the character of Steffy since 2008. She appeared as Olivia Castle in Final Destination 5 and has also had small parts in several short lived TV series.