It happened around 9:30 a.m. at an apartment complex in the 3400 block of Almand Drive in College Park.
Police said Sade Danmola was taken to Grady Memorial Hospital after the shooting, where she later died.
Police said Eric Austin, 31, is person of interest in the case.
Austin is the father of Danmola’s infant.
Police believe the shooting sprang from a domestic dispute.