After NBC refused to air an ad for new movie “Obvious Child” because it included the word “abortion,” the network is facing heat from Planned Parenthood and Lena Dunham.

The “Girls” star tweeted, “NBC refuses to air the trailer for Obvious Child because it mentions abortion and that’s not okay. #StoptheStigma.”

She linked to a Planned Parenthood petition “urging the network to clarify its standards.”

Page Six exclusively reported last week that NBC wouldn’t accept an ad for the film starring Jenny Slate, of Comedy Central’s “Kroll Show,” and informed distributor A24 Films that the subject matter was inappropriate for its audience.

A source says the network then suggested it would accept shorter, 15-second spots if the word “abortion” was axed.

The comedy follows a single Brooklyn woman coping with an unwanted pregnancy after a one-night stand. NBC denied it rejected the ad by stating: “No final spots were submitted to NBC broadcast standards.”

But a source insisted that “final spots” were never submitted because NBC’s “feedback” said the ads were inappropriate.

The trailer includes Slate nervously gearing herself up in front of a mirror to confront her paramour saying, “Remember from before when we did sex to each other? I’m having your abortion. Do you want to share a dessert?”