Katherin Shuffield, 30, said the masked gunman jumped over her teller station and shot her once in the abdomen April 22 just after the Huntington Bank branch had opened for the day.
As she lay bleeding on the floor, she said the gunman, who remains at large, refused to let her co-workers call 911 to get her medical assistance.
"I said, 'Please help me! He shot me, he shot me! My babies!' He didn't let anybody do anything because he was more worried about taking the money," Shuffield said during a news conference at Methodist Hospital in Indianapolis.
Two days after the shooting, Shuffield, who was five months pregnant, lost her twin girls. She remains hospitalized with an infection created by the bullet that passed through her abdomen.