Jessica Biel is ''thrilled'' to be pregnant.

The 'Total Recall' actress, whose husband Justin Timberlake recently confirmed they are expecting her first child, has been keeping a low profile as she prepares for parenthood, but plans to continue working ''right up until she has the baby.''

A source close to the 32-year-old star, who is planning to open her first child-friendly restaurant Au Fudge in Los Angeles this spring, said: ''Yesterday, Jessica went to a meeting in Studio City where they unveiled the logo. She is hoping to stay very involved with the restaurant right up until she has the baby.''

Justin confirmed the happy news on his 34th birthday last Saturday (31.01.15) by posting a photograph of himself kissing Jessica's baby bump on Instagram, with the caption: ''Thank you EVERYONE for the Bday wishes! This year, I'm getting the GREATEST GIFT EVER. CAN'T WAIT. #BoyOrGirl #YouNeverKnow #WeDontEvenKnow #WeAreTakingBets''

The couple also enjoyed a low-key break with family for the occasion.

The insider told E! News: ''They spent a few weeks in Montana celebrating Justin's birthday. Jessica laid low but was happy being in the snow and relaxing with friends. Now they are back and getting ready for Au Fudge to open and for the baby to come.''

The former 'Seventh Heaven' star is believed to be almost six months pregnant, but is still working out regularly.

The source said: ''She has definitely popped and is getting to the point where more of her clothes aren't fitting. She likes wearing baggy clothes but has several pairs of maternity jeans. Her workouts aren't as intense as she is used to but she's very happy and thrilled to be having a baby.''