This element may be linked to a desire to be a mother or a susceptibility to maternal concerns. As a result, seeing a melancholy image associated with pregnancy or motherhood might trigger a psychological pregnancy. This concept originated in ancient Greece and was later popularized by medieval writers such as Rabelais who called it "merrythought." The term is also found in Shakespeare's work. Psychological pregnancies were common among women in Victorian-era England because they believed that dreaming about getting pregnant meant you would soon be expecting a child. They also believed that dreaming about your unborn baby indicated that you would have a happy marriage. If you dreamed that you saw your husband being attacked by an animal with human traits but not killed, this meant that he would leave you over something trivial and return only when you are older and need him gone. In modern times, psychological pregnancies continue to be reported by women who believe they have been pregnant but lack clear signs from their bodies. Some say that they have felt nauseous but their urine tests negative for pregnancy. Others claim to feel pain in their breasts but a pelvic ultrasound shows no sign of fetal heartbeats. Still others claim that they have experienced mood changes or visions of the future that indicate they are carrying another person's child.