A paramedic has told an inquest jury that when he arrived at Rachel Slack's home in Holbrook he saw a dead man lying on the floor alongside her.
Adrian Ward said he had been told by a neighbour that Miss Slack was pregnant.
He also told the inquest jury in Derby that a police officer had tried to revive Miss Slack's two-year-old son, Auden, using mouth-to-mouth resuscitation. But because the officer was blowing into Auden's mouth, it was coming out of from stab wounds in his chest.
A Coroner's report has made recommendations after an inquest found Rachael Slack and her son were unlawfully killed by her former partner.
A timeline of the events surrounding the stabbing of Rachael Slack, Andrew Cairns and their two-year old son, Auden.
The inquest on a mentally ill patient found stabbed to death with his ex-partner and their son in Derbyshire will hear further evidence.