Minnie Driver is suffering such bad morning sickness, she has to carry a "vomit receptacle" everywhere she goes.

The actress announced she is expecting her first child on The Tonight Show with Jay Leno on Thursday night.

She revealed she is suffering, "morning, day and night sickness", and described some the sticky situations she has found herself in: "I spend so much time in my car in Los Angeles, I had to get something like a travel puke receptacle. I was on the 405 (highway) the other day in traffic. I knew I was going to throw up - and I had my handy Tupperware vomit receptacle. I am a safe vomiter. I kept one hand on the wheel."

Driver, 38, who has dated Matt Damon and Josh Brolin in the past, has refused to reveal the identity of her unborn baby’s father.