Actress Carey Mulligan says it is "incredibly difficult" to be a working mother in Hollywood.She is set to play an alcohol-dependent mother opposite Jake Gyllenhaal in the upcoming movie "Wildlife". In an interview with Radio Times, Mulligan, 33, says Hollywood does not know how to deal with pregnant women and new mothers, reports dailymail.co.uk. The "Suffragette" star said that being a working mother in the film industry was tough as "childcare is so expensive"."I've never, ever been on a set where they have childcare, but I've been on lots of sets where lots of people have very young children... I had my daughter on the set of (2017 Netflix drama) 'Mudbound' and 'Wildlife' and loads of the crew had kids, but they had to arrange childcare. It's always incredibly complicated," said the mother of two."Childcare on set would make it possible for a lot of talented people to come and do their job. At the moment, it's limiting," she added. Mulligan is married to Mumford & Sons frontman Marcus Mumford. They have two children -- daughter Evelyn Grace, 3, and son Wilfred, 14 months. "I don't think we're at the level where it (being pregnant) is acceptable across the board yet. I think if people can hide it, they do."