United Kingdom, May 19 -- Jennifer Lawrence had "great hormones" while she was filming 'Die, My Love'.

The Oscar-winning actress was five months pregnant during the film's shoot, but Jennifer insists she was "feeling great" on set.

The 34-year-old movie star - who plays a new mother whose mental health deteriorates - said at the Cannes Film Festival: "A part of what she's going through is the hormonal imbalance that comes with postpartum, but she's also having an identity crisis. 'Who am I as a mother? Who am I as a wife? Who am I as a sexual person to my husband? Who am I as a creative?' And, I think, she's plagued with this feeling that she's disappearing."

Jennifer was able to "dip into some of this visceral emotion" during the film...