United Kingdom, May 21 -- Natalie Portman struggled to cope with Hollywood's awards season when she was pregnant.

The 43-year-old actress was expecting a baby when she promoting her film 'Black Swan' and she was four months pregnant when she attended the 2011 Oscars and took home the Best Actress prize - but Natalie has now admitted attending all the glitzy events was tough when she was sober and everyone around her was drinking.

During an appearance on the 'Dish' podcast, she explained: "The main thing was I was pregnant when I went through that award season, so I couldn't drink at all.

"During like all of those events. Which was hard. Uh, 'cause . It's a lot of like-It's a lot of stress. It's a lot of attention. It's a lot of .

"And...