Maria Lorena Gerbeno said information she'd received from a hospital about her newborn didn't add up and her suspicions about a mix-up grew when she met the other mother at a clinic where the daughters were having "well-baby" checks, Digital Journal reported Wednesday.
Gerbeno, a lawyer in San Juan, Argentina, said she and Veronica Tejada compared notes about the weights of their babies -- matching ounce for ounce -- and learned they delivered them on the same day in September, the report said.
Gerbeno said that while she was in the hospital after giving birth she was given conflicting information about her daughter's birth and weight. She said she questioned staff members and "I never got any answers."
After meeting Tejada at the clinic, Gerbeno filed a criminal complaint and asked a judge to order DNA tests on the babies.
The results confirmed confirmed the mothers' suspicions that the babies had been switched, Digital Journal said.
Anticipating the test results would confirm their suspicions, the two mothers traded photos and talked on the phone regularly.
"I spent three weeks with a baby that was not my daughter but I gave her all my love and knew that the other mom would do the same," Gerbeno told a local news outlet.
The Gerbeno and Tejada families met in court Monday and the babies were given to their rightful parents.
Digital Journal said the women are considering suing the hospital.