Amanda Hein has taken the stand in Northampton County to testify in her own defense.
Police say Hein gave birth to a baby boy in the bathroom of Starter's Pub in Lower Saucon Township last August.
Investigators say she wrapped the baby in a plastic bag, then left him in the toilet tank. The cleaning crew found the baby the next day.
Earlier this week, the jury heard testimony from a medical expert, restaurant employees and Hein's friends who were with her that night.
The prosecution rested Wednesday morning, and Hein is the first witness to be called by the defense.
Hein testified that she to Starter's Pub that day to celebrate a friend's birthday.
Hein says she went to the bathroom to have what she thought was a bowel movement, but instead, she says she saw the head of the baby.
Hein testified that she thought the child was dead, and that's why she put him in the tank of the toilet.
In March, Hein pleaded guilty to a general count of homicide. The jury will decide if she is guilty of first degree or third degree murder.
In exchange for the guilty plea, Northampton County District Attorney John Morganelli agreed not to seek the death penalty.
If Hein is convicted of first degree murder, she will get life without the possibility of parole. A third degree murder charge carries a maximum sentence of 20 to 40 years in prison.
Stay with 69 News and WFMZ.com for the latest from the courtroom.