The woman, described by police as heavily pregnant and around 20 years old, was raped on her hall floor after opening the door to an unknown assailant in Haninge, south of Stockholm.
After the attack the woman rang her husband, who in turn called the police, Aftonbladet reports. The victim was taken to a rape clinic at Stockholm South General Hospital for treatment. She left the hospital later in the night, according to police.
There have been no arrests in connection with the attack.