The lawsuit states Thompson gave birth to Jacob at the hospital on August 2, 2012.
Monica Thompson was medicated with Ambien and Vicodin a few hours before a nurse walked into Thompson's room, gave her the baby and left around 3 a.m. on August 6, 2012, according to the suit.
While the tragedy of Jacob's death can't be underscored, some commentators on the web wondered how it was even possible the mother was able to breastfeed while on narcotics in the first place, implying it was her own fault and not the medications that led to her smothering the boy.
"About an hour later, still drowsy and groggy, Mrs. Thompson noticed her son was unresponsive in her arms", the lawsuit states.
"She called for a nurse while she tried to get him to respond", the suit said.
When Jacob was stabilized he was transported to Legacy Randall Children Hospital's Neonatal Intensive Care Unit for critical care.
The suit - which has been filed on behalf of Jacob Thmopson - seeks damages for the baby's "desperation and anxiety" as he was suffocated and his mother's "severe emotional distress upon unintentionally killing her firstborn child".
The hospital has released a statement, as well, noting, "This was a tragic event and our thoughts and prayers continue to be with the family. We are reviewing the claims being made and we are unable to provide any additional information at this time".More news: TSX hits 1-month low on risk aversion, lower oil prices
She tried to wake him and called for a nurse.
Monica Thompson with husband Graham Thompson and their son.
The lawsuit, seeking $8.6 million, says the hospital was negligent for medicating Thompson, putting Jacob in bed with her without supervision, and not having clear policies on the dangers that the combination could create. What happened to us could've easily been prevented had the nurses been doing their job'.
The suit also says that when the doctors performed CPR on Jacob, they broke his ribs which can "cause substantial pain".
Jacob wasn't breathing and was placed on life support.
Told the lawyer, 'It has taken Monica and the family all this time to finally come to the conclusion that something went wrong, and they were not to blame'.
Her son had been born "healthy" by Cesarean section, according to the lawsuit. Experts say babies who share a bed with their parents are at risk because parents can roll on top of them, or the babies can get trapped in blankets and bedsheets.
"Jacob suffocated under his mother while she was under the influence of narcotics and sleep aids", her lawsuit reads. "It is senseless", Diego Conde, the family attorney said.