Aishwarya, 37, plays the lead role in "Heroine".
"At this point, nothing is more important than Aishwarya's well being and good health, " producers UTV said.
"We have all agreed that the best step would be to avoid shooting further, rather than proceeding with an incredibly demanding schedule over the coming months, " it said.
However there are reports doing rounds that Ash is not very happy with the director Madhur Bhandarkar and the way he handled the good news. According to sources, Aishwarya is totally shocked at Madhur's attitude.
"She is pregnant, not sick or bedridden, and is perfectly capable of shooting. There was only one action scene in the movie that shows her character running from a brothel and she has already shot that.
Rather than congratulating Ash on the most awaited good news of her life, Madhur just seemed worried about their film. Ash told them she'll complete the shoot by July end. But they felt she will look overweight and unglamorous," the source told.
Meanwhile, Priyanka has rubbished reports that she might replace Aishwarya in "Heroine".
"Read some stupid article about how i wanna do Madhur Bhandarkar's film HEROINE... I think Madhur is an amazing director and. It'll be amazing to work together again but GUYS this one aint it!!! I wish him and Aishwarya lots of luck with the film, " the Bollywood star posted on Twitter.
"I also wish that journos would actually do some journalism rather than scriptwriting and stop deciding my next moves!!!" she added.
The project, also starring Arjun Rampal, was announced during the Cannes Film Festival this year.
Ash pregnant, Madhur depressed!
Aishwarya Rai's pregnancy has driven Madhur Bhandarkar into depression as scrapping the film Heroine will cost him Rs 4 crore!
