Carrera's body was discovered after her sister became alarmed when she could not contact her and asked police to conduct a well-being check at the home, officials said.
When police called at her home, she was found with multiple stab wounds in an empty bathtub.
The 26-year-old was last seen around 2am on Saturday, hours after her wedding the evening before.
She was due to pick up her two children - aged eight and two years old - from a family member on Saturday afternoon but did not show up, according to the Chicago Tribune.
A spokeswoman for the Cook County Clerk's office said that Estrella did not yet have a marriage certificate on file.
She just moved to the area about two months ago and is believed to have married a 30-year-old Chicago man who has not yet been identified.
Her cousin Sandy Lopez said he was the father of her youngest child and it was a quick wedding. They had been in an on-off relationship for three years.
She said Estrella called her on Friday to invite her to a party but didn't mention that it was a wedding party.