A 9-months-pregnant woman was bumped by a rider on a crowded subway in lower Manhattan Thursday — and when she pushed him away, he retaliated by kicking her twice in the stomach, cops said.

Natasha Rodney, 28, who is due to give birth to a boy on March 27, was riding a northbound 4 train near the Bowling Green station at about 8:40 a.m. when Michael Lee, 40, of Staten Island ran into her, police said.

“It was a crowded train and the guy bumped into her,” NYPD spokesman Sgt. Lee Jones said. “She mentioned something to him.”

The two then got into an argument that turned physical.

Rodney pushed the man to the ground — and he viciously retaliated, police said.

“He got back up and kicked her twice in the stomach,” Jones said.

Cops arrested Lee at the station and charged him with two counts of assault and reckless endangerment.

Rodney was rushed to New York-Presbyterian Hospital, where she was recovering Thursday afternoon.

“He’s in [police] custody. I feel fine,” Rodney told The Post by phone from her hospital bed.

Her unborn child was unharmed, she added.

Rodney’s grandmother Irmine Smart was distraught over the ordeal.

“I told her the other day, there are too many things happening on the subway,” said Smart, 77, who previously suggested that Rodney carry a small bottle of ammonia as a means of defense. “Nobody cares about anybody anymore.”

Commenting on Lee’s arrest, Smart said, “Thank God for that.”

A vendor outside the station who witnessed the aftermath said Lee — who was “well-dressed,” wearing a blue coat — “went cooperatively.”

The witness called the violent encounter “sick.”

“There’s no excuse to kick anybody, but especially a pregnant woman. You’re harming two lives at once!” said the ­vendor.

A 4-train conductor who was aware of the incident expressed his disgust.

“What kind of lowlife kicks a pregnant woman?” he said. “That guy needs to be locked up for a damn long time.”

Additional reporting by Kevin Fasick and Natalie Musumeci